Collection<ConstraintFormula> (@NotNull PsiType leftType, @NotNull PsiType rightType, @NotNull Position position, @NotNull PsiElement context) { if (position == Position.METHOD_PARAMETER && isClassType(leftType, JAVA_LANG_STRING) && isClassType(rightType, GROOVY_LANG_GSTRING)) { return Collections.emptyList(); } else { return null; } }