Plugin for adding custom property editors on inspector. [EditorInspectorPlugin] allows adding custom property editors to [EditorInspector]. When an object is edited, the [method can_handle] function is called and must return [code]true[/code] if the object type is supported. If supported, the function [method parse_begin] will be called, allowing to place custom controls at the beginning of the class. Subsequently, the [method parse_category] and [method parse_property] are called for every category and property. They offer the ability to add custom controls to the inspector too. Finally, [method parse_end] will be called. On each of these calls, the "add" functions can be called. To use [EditorInspectorPlugin], register it using the [method EditorPlugin.add_inspector_plugin] method first. $DOCS_URL/tutorials/plugins/editor/inspector_plugins.md Adds a custom control, which is not necessarily a property editor. Adds a property editor for an individual property. The [code]editor[/code] control must extend [EditorProperty]. Adds an editor that allows modifying multiple properties. The [code]editor[/code] control must extend [EditorProperty]. Returns [code]true[/code] if this object can be handled by this plugin. Called to allow adding controls at the beginning of the list. Called to allow adding controls at the beginning of the category. Called to allow adding controls at the end of the list. Called to allow adding property specific editors to the inspector. Usually these inherit [EditorProperty]. Returning [code]true[/code] removes the built-in editor for this property, otherwise allows to insert a custom editor before the built-in one.