private static @Nullable String getNameOfChronoEnum(@Nullable PsiExpression expression, @Nullable String methodName) {
        if (expression == null || methodName == null) return null;
        if (!(expression instanceof PsiReferenceExpression referenceExpression)) {
          return null;
        }
        PsiElement resolvedElement = referenceExpression.resolve();
        if (!(resolvedElement instanceof PsiEnumConstant enumConstant)) {
          return null;
        }
        PsiClass containingClass = enumConstant.getContainingClass();
        if (containingClass == null || !containingClass.isEnum()) {
          return null;
        }
        String classQualifiedName = containingClass.getQualifiedName();
        if (!(ChronoUtil.CHRONO_FIELD.equals(classQualifiedName) && (methodName.equals("get") || methodName.equals("with"))) &&
            !(ChronoUtil.CHRONO_UNIT.equals(classQualifiedName)) && (methodName.equals("plus") || methodName.equals("minus"))) {
          return null;
        }
        return enumConstant.getName();
      }
private static @Nullable String getNameOfChronoEnum(@Nullable PsiExpression expression, @Nullable String methodName)