private void replaceIteratorNext(
     PsiElement element,
     String contentVariableName,
     String iteratorName,
     PsiElement childToSkip,
     StringBuilder out,
     PsiType contentType) {
   if (isIteratorNext(element, iteratorName, contentType)) {
     out.append(contentVariableName);
   } else {
     final PsiElement[] children = element.getChildren();
     if (children.length == 0) {
       final String text = element.getText();
       if (PsiKeyword.INSTANCEOF.equals(text) && out.charAt(out.length() - 1) != ' ') {
         out.append(' ');
       }
       out.append(text);
     } else {
       boolean skippingWhiteSpace = false;
       for (final PsiElement child : children) {
         if (child.equals(childToSkip)) {
           skippingWhiteSpace = true;
         } else if (child instanceof PsiWhiteSpace && skippingWhiteSpace) {
           // don't do anything
         } else {
           skippingWhiteSpace = false;
           replaceIteratorNext(
               child, contentVariableName, iteratorName, childToSkip, out, contentType);
         }
       }
     }
   }
 }
 private void replaceCollectionGetAccess(
     PsiElement element,
     String contentVariableName,
     PsiVariable listVariable,
     String indexName,
     PsiElement childToSkip,
     StringBuilder out) {
   if (isListGetLookup(element, indexName, listVariable)) {
     out.append(contentVariableName);
   } else {
     final PsiElement[] children = element.getChildren();
     if (children.length == 0) {
       final String text = element.getText();
       if (PsiKeyword.INSTANCEOF.equals(text) && out.charAt(out.length() - 1) != ' ') {
         out.append(' ');
       }
       out.append(text);
     } else {
       boolean skippingWhiteSpace = false;
       for (final PsiElement child : children) {
         if (child.equals(childToSkip)) {
           skippingWhiteSpace = true;
         } else if (child instanceof PsiWhiteSpace && skippingWhiteSpace) {
           // don't do anything
         } else {
           skippingWhiteSpace = false;
           replaceCollectionGetAccess(
               child, contentVariableName, listVariable, indexName, childToSkip, out);
         }
       }
     }
   }
 }