[UNiagaraHierarchyItemBase](API\Plugins\NiagaraEditor\ViewModels\HierarchyEditor\UNiagaraHierarchyItemBase) * FindChildWithIdentity ( [FNiagaraHierarchyIdentity](API\Plugins\NiagaraEditor\ViewModels\HierarchyEditor\FNiagaraHierarchyIdentity) ChildIdentity, bool bSearchRecursively )