Subordinate files are assumed to have some "parent" DocData object that handles actual serialization, so Load operation is a no-op.
Namespace:  Microsoft.VisualStudio.Modeling.Shell
Assembly:  Microsoft.VisualStudio.Modeling.Sdk.Shell.12.0 (in Microsoft.VisualStudio.Modeling.Sdk.Shell.12.0.dll)
Syntax
'Declaration
Protected Overrides Sub Load ( _
    fileName As String, _
    isReload As Boolean _
)
protected override void Load(
    string fileName,
    bool isReload
)
protected:
virtual void Load(
    String^ fileName, 
    bool isReload
) override
abstract Load : 
        fileName:string * 
        isReload:bool -> unit  
override Load : 
        fileName:string * 
        isReload:bool -> unit
protected override function Load(
    fileName : String, 
    isReload : boolean
)
Parameters
- fileName
Type: System.String 
- isReload
Type: System.Boolean 
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.