@NotNull
  public static PsiElement createFunctionIdentifier(@NotNull Project project, @NotNull String functionName) {
    PsiFile file = createTempFile(project, functionName + "() {  }");
    ShFunctionDefinition functionDefinition = PsiTreeUtil.findChildOfType(file, ShFunctionDefinition.class);
    assert functionDefinition != null;
    PsiElement word = functionDefinition.getWord();
    assert word != null;
    return word;
  }
@NotNull
  public static PsiElement createFunctionIdentifier(@NotNull Project project, @NotNull String functionName)