@Nullable
	public MappingApplier inCurrentWorkspace() {
		if (!workspaceManager.hasCurrentWorkspace())
			return null;

		InheritanceGraph currentWorkspaceInheritanceGraph = inheritanceGraphService.getCurrentWorkspaceInheritanceGraph();
		if (currentWorkspaceInheritanceGraph == null)
			return null;

		Workspace workspace = workspaceManager.getCurrent();
		return new MappingApplier(workspace, currentWorkspaceInheritanceGraph, listeners, aggregateMappingManager);
	}
@return Applier for the current workspace, or {@code null} if no workspace is open.
recaf-core/src/main/java/software/coley/recaf/services/mapping/MappingApplierService.java