PsiMethod containing PsiReference

To community,

I'm stuck into constructing PsiElement calls chain and deleting the chain at once.

I found out that

   PsiReference.getElement().delete();

delets just a reference itself, and then I need an actual PsiElement(PsiMethod in most cases) which contains that reference.

For example in the following situation, to delete foo and fooCaller at once is what I'm working on.

public void foo() { /* do something */ }
public void fooCaller() {
   foo(); // PsiReference of foo() refers here
}

=======================================

PsiMethod fooElement = // PsiMethod of foo
ArrayList<PsiReference> references = new ArrayList<>(ReferencesSearch.search(fooElement).findAll());
PsiElement fooCallerElement = references.get(0).getElement();
/* It doesn't delete fooCaller! */
fooCallerElement.delete();