private static void removeParametersFromCall(
     GrMethodCallExpression methodCall, GrIntroduceParameterSettings settings) {
   final GroovyResolveResult resolveResult = methodCall.advancedResolve();
   final PsiElement resolved = resolveResult.getElement();
   LOG.assertTrue(resolved instanceof PsiMethod);
   final GrClosureSignature signature =
       GrClosureSignatureUtil.createSignature(
           (PsiMethod) resolved, resolveResult.getSubstitutor());
   final GrClosureSignatureUtil.ArgInfo<PsiElement>[] argInfos =
       GrClosureSignatureUtil.mapParametersToArguments(signature, methodCall);
   LOG.assertTrue(argInfos != null);
   settings
       .parametersToRemove()
       .forEach(
           new TIntProcedure() {
             @Override
             public boolean execute(int value) {
               final List<PsiElement> args = argInfos[value].args;
               for (PsiElement arg : args) {
                 arg.delete();
               }
               return true;
             }
           });
 }
 public void visitArgumentList(GrArgumentList list) {
   List<TypeConstraint> constraints = new ArrayList<TypeConstraint>();
   for (GroovyResolveResult variant : ResolveUtil.getCallVariants(list)) {
     final Map<GrExpression, Pair<PsiParameter, PsiType>> map =
         GrClosureSignatureUtil.mapArgumentsToParameters(
             variant,
             list,
             true,
             true,
             list.getNamedArguments(),
             list.getExpressionArguments(),
             GrClosableBlock.EMPTY_ARRAY);
     addConstraintsFromMap(constraints, map);
   }
   if (!constraints.isEmpty()) {
     myResult = constraints.toArray(new TypeConstraint[constraints.size()]);
   }
 }
    public void visitMethodCallExpression(GrMethodCallExpression methodCall) {
      final GrExpression invokedExpression = methodCall.getInvokedExpression();
      if (myExpression.equals(invokedExpression)) {
        myResult =
            new TypeConstraint[] {
              SubtypeConstraint.create(GroovyCommonClassNames.GROOVY_LANG_CLOSURE, methodCall)
            };
        return;
      }

      final GrClosableBlock[] closureArgs = methodCall.getClosureArguments();
      //noinspection SuspiciousMethodCalls
      final int closureIndex = Arrays.asList(closureArgs).indexOf(myExpression);
      if (closureIndex >= 0) {
        List<TypeConstraint> constraints = new ArrayList<TypeConstraint>();
        for (GroovyResolveResult variant : ResolveUtil.getCallVariants(myExpression)) {
          final GrArgumentList argumentList = methodCall.getArgumentList();
          final GrNamedArgument[] namedArgs =
              argumentList == null ? GrNamedArgument.EMPTY_ARRAY : argumentList.getNamedArguments();
          final GrExpression[] expressionArgs =
              argumentList == null
                  ? GrExpression.EMPTY_ARRAY
                  : argumentList.getExpressionArguments();
          try {
            final Map<GrExpression, Pair<PsiParameter, PsiType>> map =
                GrClosureSignatureUtil.mapArgumentsToParameters(
                    variant, methodCall, true, true, namedArgs, expressionArgs, closureArgs);
            addConstraintsFromMap(constraints, map);
          } catch (RuntimeException e) {
            LOG.error(
                "call: " + methodCall.getText() + "\nsymbol: " + variant.getElement().getText(), e);
          }
        }
        if (!constraints.isEmpty()) {
          myResult = constraints.toArray(new TypeConstraint[constraints.size()]);
        }
      }
    }
  @Override
  protected void processIntention(@NotNull PsiElement element, Project project, Editor editor)
      throws IncorrectOperationException {
    final GrField field;
    if (element.getParent() instanceof GrField) {
      field = (GrField) element.getParent();
    } else {
      final PsiReference ref = element.getReference();
      LOG.assertTrue(ref != null);
      PsiElement resolved = ref.resolve();
      if (resolved instanceof GrAccessorMethod) {
        resolved = ((GrAccessorMethod) resolved).getProperty();
      }
      LOG.assertTrue(resolved instanceof GrField);
      field = (GrField) resolved;
    }

    final HashSet<PsiReference> usages = new HashSet<PsiReference>();
    usages.addAll(ReferencesSearch.search(field).findAll());
    final GrAccessorMethod[] getters = field.getGetters();
    for (GrAccessorMethod getter : getters) {
      usages.addAll(MethodReferencesSearch.search(getter).findAll());
    }
    final GrAccessorMethod setter = field.getSetter();
    if (setter != null) {
      usages.addAll(MethodReferencesSearch.search(setter).findAll());
    }

    final String fieldName = field.getName();
    LOG.assertTrue(fieldName != null);
    final Collection<PsiElement> fieldUsages = new HashSet<PsiElement>();
    MultiMap<PsiElement, String> conflicts = new MultiMap<PsiElement, String>();
    for (PsiReference usage : usages) {
      final PsiElement psiElement = usage.getElement();
      if (PsiUtil.isMethodUsage(psiElement)) continue;
      if (!GroovyFileType.GROOVY_LANGUAGE.equals(psiElement.getLanguage())) {
        conflicts.putValue(
            psiElement,
            GroovyIntentionsBundle.message("closure.is.accessed.outside.of.groovy", fieldName));
      } else {
        if (psiElement instanceof GrReferenceExpression) {
          fieldUsages.add(psiElement);
          if (PsiUtil.isAccessedForWriting((GrExpression) psiElement)) {
            conflicts.putValue(
                psiElement,
                GroovyIntentionsBundle.message("write.access.to.closure.variable", fieldName));
          }
        } else if (psiElement instanceof GrArgumentLabel) {
          conflicts.putValue(
              psiElement,
              GroovyIntentionsBundle.message("field.is.used.in.argument.label", fieldName));
        }
      }
    }
    final PsiClass containingClass = field.getContainingClass();
    final GrExpression initializer = field.getInitializerGroovy();
    LOG.assertTrue(initializer != null);
    final PsiType type = initializer.getType();
    LOG.assertTrue(type instanceof GrClosureType);
    final GrSignature signature = ((GrClosureType) type).getSignature();
    final List<MethodSignature> signatures =
        GrClosureSignatureUtil.generateAllMethodSignaturesBySignature(fieldName, signature);
    for (MethodSignature s : signatures) {
      final PsiMethod method = MethodSignatureUtil.findMethodBySignature(containingClass, s, true);
      if (method != null) {
        conflicts.putValue(
            method,
            GroovyIntentionsBundle.message(
                "method.with.signature.already.exists",
                GroovyPresentationUtil.getSignaturePresentation(s)));
      }
    }
    if (conflicts.size() > 0) {
      final ConflictsDialog conflictsDialog =
          new ConflictsDialog(
              project,
              conflicts,
              new Runnable() {
                @Override
                public void run() {
                  execute(field, fieldUsages);
                }
              });
      conflictsDialog.show();
      if (conflictsDialog.getExitCode() != DialogWrapper.OK_EXIT_CODE) return;
    }
    execute(field, fieldUsages);
  }