3.2.5.150.2.2.1 GetById
Return Type: Microsoft.SharePoint.Client.WebParts.WebPartDefinition
Returns the Web Part definition object (1) in the collection with a Web Part identifier equal to the id parameter.
Parameters:
id: The Web Part identifier of the Web Part definition to retrieve.
Type: CSOM GUID
All WebPartDefinition objects (1) MUST have a unique value for their Id property.