question: public boolean makeEntryAChildOfAParent ( User user , Entry parent , Entry child , boolean justTheEntry , boolean isAdmin , Errors errors ) { if ( user == null ) { Errors . add ( errors , errorMessages . errorUserIsNull ( ) ) ; return false ; } if ( parent == null ) { Errors . add ( errors , errorMessages . errorParentIsNull ( ) ) ; return false ; } if ( child == null ) { Errors . add ( errors , errorMessages . errorChildIsNull ( ) ) ; return false ; } if ( ! canUserModifyEntry ( user , parent , isAdmin ) ) { Errors . add ( errors , errorMessages . errorTheUserIsNotEntitledToModifyTheParentEntry ( ) ) ; return false ; } if ( ! canUserModifyEntry ( user , child , isAdmin ) ) { Errors . add ( errors , errorMessages . errorTheUserIsNotEntitledToModifyTheChildEntry ( ) ) ; return false ; } if ( ! justTheEntry ) { if ( isEntryADescendantOfAncestor ( parent , child ) ) { Errors . add ( errors , errorMessages . errorChildIsAnAncestorOfTheParent ( ) ) ; return false ; } } else { final ArrayList < Entry > childsChildrenInOrder = getChildrenInOrder ( child ) ; final Entry parentOfChild = getEntryById ( child . getParentId ( ) ) ; for ( final Entry childsChildTemp : childsChildrenInOrder ) { if ( ! makeNotebookEntry ( user , childsChildTemp , isAdmin , errors ) ) { return false ; } } if ( parentOfChild != null ) { Entry previous = child ; for ( final Entry childsChildTemp : childsChildrenInOrder ) { if ( ! createParentChildRelationship ( user , parentOfChild , childsChildTemp , previous , isAdmin , errors ) ) { return false ; } previous = childsChildTemp ; } } } if ( ! createParentChildRelationship ( user , parent , child , null , isAdmin , errors ) ) { return false ; } return true ; }
target:  API method. Makes an entry a child of another.