boolean (@NotNull PsiElement psiElement) { if (psiElement instanceof PsiMethod method) { final int paramsCount = method.getParameterList().getParametersCount(); final String methodName = method.getName(); final PsiClass containingClass = method.getContainingClass(); if (paramsCount == 1 && PsiTypes.voidType().equals(method.getReturnType()) && "start".equals(methodName)) { return InheritanceUtil.isInheritor(containingClass, true, JavaFxCommonNames.JAVAFX_APPLICATION_APPLICATION); } if (paramsCount == 0 && INITIALIZE_METHOD_NAME.equals(methodName) && method.hasModifierProperty(PsiModifier.PUBLIC) && containingClass != null && JavaFxPsiUtil.isControllerClass(containingClass)) { return true; } } else if (psiElement instanceof PsiClass) { return InheritanceUtil.isInheritor((PsiClass)psiElement, true, JavaFxCommonNames.JAVAFX_APPLICATION_APPLICATION); } return false; }