boolean (@NotNull PsiMethod method1, PsiElement another) { if (method1 == another) return true; if (!(another instanceof PsiMethod)) return false; PsiMethod method2 = (PsiMethod)another; if (!another.isValid()) return false; if (!method1.getName().equals(method2.getName())) return false; PsiClass aClass1 = method1.getContainingClass(); PsiClass aClass2 = method2.getContainingClass(); PsiManager manager = method1.getManager(); if (!(aClass1 != null && aClass2 != null && manager.areElementsEquivalent(aClass1, aClass2))) return false; PsiParameter[] parameters1 = method1.getParameterList().getParameters(); PsiParameter[] parameters2 = method2.getParameterList().getParameters(); if (parameters1.length != parameters2.length) return false; for (int i = 0; i < parameters1.length; i++) { PsiParameter parameter1 = parameters1[i]; PsiParameter parameter2 = parameters2[i]; PsiType type1 = parameter1.getType(); PsiType type2 = parameter2.getType(); if (!compareParamTypes(manager, type1, type2, new HashSet<>())) return false; } return true; }