Family contains other families loaded into it but not used. Consider purging family document from unused families and types.

public static FailureDefinitionId ManyUnusedNestedFamilies { get; }

Public Shared ReadOnly Property ManyUnusedNestedFamilies As FailureDefinitionId
	Get

public:
static property FailureDefinitionId^ ManyUnusedNestedFamilies {
	FailureDefinitionId^ get ();
}