void (@NotNull PsiElement element) { PsiElement parent = element.getParent(); if (parent instanceof ASTDelegatePsiElement) { CheckUtil.checkWritable(element); ((ASTDelegatePsiElement)parent).deleteChildInternal(element.getNode()); } else if (parent instanceof CompositeElement) { CheckUtil.checkWritable(element); ((CompositeElement)parent).deleteChildInternal(element.getNode()); } else if (parent instanceof PsiFile) { CheckUtil.checkWritable(element); parent.deleteChildRange(element, element); } else { throw new UnsupportedOperationException(element.getClass().getName() + " under " + (parent == null ? "null" : parent.getClass().getName())); } }