boolean (@Nullable GrParameter parameter1, @Nullable GrParameter parameter2) { if (parameter1 == null || parameter2 == null) { return false; } final PsiType type1 = parameter1.getType(); final PsiType type2 = parameter2.getType(); if (!typesAreEquivalent(type1, type2)) { return false; } final String name1 = parameter1.getName(); final String name2 = parameter2.getName(); return name1.equals(name2); }