How to use

eContainer

method

in

org.eclipse.xtext.Assignment

protected boolean shouldUseParent(ICompositeNode result, int offset, ILeafNode leaf) {
  if (leaf.getTotalEndOffset() == offset) {
    return true;
  }
  if (result.getGrammarElement() instanceof RuleCall) {
    RuleCall rc = (RuleCall) result.getGrammarElement();
    if (!rc.getArguments().isEmpty()) {
      return true;
    }
    Assignment assignment = GrammarUtil.containingAssignment(rc);
    if (assignment != null
        && (GrammarUtil.isMultipleCardinality(assignment) || (assignment.eContainer() instanceof AbstractElement && GrammarUtil
            .isMultipleCardinality((AbstractElement) assignment.eContainer())))) {
      return true;
    }
  }
  return false;
}