@Nullable
  public static PsiElement getNamedArgumentValue(GrNamedArgument otherNamedArgument, String argumentName) {
    PsiElement parent = otherNamedArgument.getParent();

    if (!(parent instanceof GrNamedArgumentsOwner)) return null;

    GrNamedArgument namedArgument = ((GrNamedArgumentsOwner)parent).findNamedArgument(argumentName);
    if (namedArgument == null) return null;

    return namedArgument.getExpression();
  }
@Nullable
  public static PsiElement getNamedArgumentValue(GrNamedArgument otherNamedArgument, String argumentName)