private void DrawAssignButton(PropertyExtraButton button, SerializedProperty property)
 {
     if (GUI.Button(button.Position, button.Content, button.Style))
     {
         AssignObjectReference(property);
     }
 }
 private void DisplayConstantValueDropDownButton(PropertyExtraButton button, SerializedProperty constantProperty)
 {
     if (EditorGUI.DropdownButton(button.Position, button.Content, FocusType.Passive, button.Style))
     {
         var menu = MakeConstantValueSelectMenu(constantProperty);
         menu.ShowAsContext();
     }
 }