/**
   * Builds the dependency for a method element.
   *
   * <p>This creates an <code>ElementReference</code> for the given element that points to all the
   * referenced elements, and adds the given element as a dependent element to all the referenced
   * elements. This should only be called once for each method element.
   *
   * @param element A method element.
   * @return A <code>PackageDependency</code>.
   */
  private PackageDependency buildDependencyFor(MethodElement element) {
    if (element == null) {
      return null;
    }

    IConfigurationManager configMgr = LibraryService.getInstance().getConfigurationManager(config);
    if (configMgr != null) {
      SupportingElementData seData = configMgr.getSupportingElementData();
      if (seData != null && seData.isEnabled()) {
        seData.processVariabilityChildren(element, null);
      }
    }

    // Build the dependency on the selectable element/parent only
    MethodElement selectableElement = (MethodElement) LibraryUtil.getSelectable(element);
    if (selectableElement == null) {
      return null;
    }

    PackageDependency dependency = getDependency(selectableElement, true);

    // Remove any existing element reference for this element.
    dependency.removeReference(element);
    /*
    		// Get the VariabilityElement.
    		ContentElement baseElement = null;
    		if (element instanceof ContentElement) {
    			baseElement = (ContentElement) ((ContentElement) element)
    					.getVariabilityBasedOnElement();
    			if (baseElement != null) {
    				// Establish the package reference.
    				EObject selectableBase = LibraryUtil.getSelectable(baseElement);
    				if (selectableBase != null) {
    					PackageReference pkgRef = dependency.getReference(
    							selectableBase, true);

    					if (!pkgRef.hasReference(element, baseElement)) {
    						// Add the detail element reference to the package
    						// reference.
    						VariabilityElementReference ref = new VariabilityElementReference(
    								element, baseElement);
    						pkgRef.addReference(ref);
    					}

    					// Set the dependent of the referenced package.
    					getDependency(selectableBase, true).addDependent(
    							selectableElement);
    				}
    			}
    		}

    		List references = element.eCrossReferences();

    		// Update the dependents of those elements in the list.
    		if (references != null && references.size() > 0) {
    			// Get the selectable references
    			for (Iterator it = references.iterator(); it.hasNext();) {
    				EObject refElement = (EObject) it.next();
    				EObject selectableRef = LibraryUtil.getSelectable(refElement);
    				if (selectableRef != null) {
    					PackageReference pkgRef = dependency.getReference(
    							selectableRef, true);

    					if (element == selectableElement
    							&& refElement == selectableRef) {
    						// No need to add this.
    						continue;
    					}

    					if (!pkgRef.hasReference(element, refElement)) {
    						GeneralReference ref = new GeneralReference(element,
    								refElement);
    						pkgRef.addReference(ref);
    					}

    					getDependency(selectableRef, true).addDependent(
    							selectableElement);
    				}
    			}
    		}
    */
    List properties = LibraryUtil.getStructuralFeatures(element, true);
    for (int i = 0; i < properties.size(); i++) {
      EStructuralFeature f = (EStructuralFeature) properties.get(i);
      if (!(f instanceof EReference)) {
        continue;
      }

      EReference feature = (EReference) f;
      if (feature.isContainer() || feature.isContainment()) {
        continue;
      }

      if (element instanceof Task) {
        if (feature == UmaPackage.eINSTANCE.getTask_Steps()) {
          continue;
        }
      }

      if (element instanceof TaskDescriptor) {
        if (feature == UmaPackage.eINSTANCE.getTaskDescriptor_SelectedSteps()) {
          continue;
        }
      }

      Object value = TypeDefUtil.getInstance().eGet(element, feature);
      if (value == null) {
        continue;
      }

      MethodElement refElement = null;
      List values = null;
      int count = 0;

      if (feature.isMany()) {
        values = (List) value;
        if (values.size() > 0) {
          refElement = (MethodElement) values.get(count);
        }
      } else if (value instanceof MethodElement) {
        refElement = (MethodElement) value;

        if (replacerSet != null) {
          if (feature == UmaPackage.eINSTANCE.getVariabilityElement_VariabilityBasedOnElement()) {
            VariabilityElement ve =
                element instanceof VariabilityElement ? (VariabilityElement) element : null;
            VariabilityType type = ve == null ? null : ve.getVariabilityType();
            if (type == VariabilityType.EXTENDS_REPLACES || type == VariabilityType.REPLACES) {
              replacerSet.add(ve);
            }
          }
        }
      }

      while (refElement != null) {

        boolean skip = false;
        if (feature == UmaPackage.eINSTANCE.getRole_Modifies()) {
          skip = true;
        }

        MethodElement selectableRef =
            skip ? null : (MethodElement) LibraryUtil.getSelectable(refElement);
        if (selectableRef != null) {
          PackageReference pkgRef = dependency.getReference(selectableRef, true);

          if (element == selectableElement && refElement == selectableRef) {
            // No need to add this.
            break;
          }

          ElementReference ref = pkgRef.getReference(element, refElement);
          if (ref == null) {
            ref = new ElementReference(element, refElement);
            pkgRef.addReference(ref);
          }

          ref.addFeature(feature);

          getDependency(selectableRef, true).addDependent(selectableElement);
        }

        refElement = null;
        if (values != null) {
          count++;
          if (count < values.size()) {
            refElement = (MethodElement) values.get(count);
          }
        }
      }
    }

    return dependency;
  }