public boolean isSuperMethod(PsiMethod superMethodCandidate,
                                 PsiMethod derivedMethod) {
      final PsiClass superClassCandidate =
        superMethodCandidate.getContainingClass();
      final PsiClass derivedClass = derivedMethod.getContainingClass();
      if (derivedClass == null || superClassCandidate == null) {
        return false;
      }
      if (!derivedClass.isInheritor(superClassCandidate, false)) {
        return false;
      }
      final PsiSubstitutor superSubstitutor =
        TypeConversionUtil.getSuperClassSubstitutor(
          superClassCandidate, derivedClass,
          PsiSubstitutor.EMPTY);
      final MethodSignature superSignature =
        superMethodCandidate.getSignature(superSubstitutor);
      final MethodSignature derivedSignature =
        derivedMethod.getSignature(PsiSubstitutor.EMPTY);
      return MethodSignatureUtil.isSubsignature(superSignature,
                                                derivedSignature);
    }
public boolean isSuperMethod(PsiMethod superMethodCandidate,
                                 PsiMethod derivedMethod)