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childrenEntitiesSelector is a function which creates a predefined relationship selector factory. Its goal is to simply the process of creating relationship selectors with childrenEntities.

declare function childrenEntitiesSelector(  selector,  keyId,  keyValue,);

Its parameters are the same as childrenEntities has, but without relationships.

const company = rootEntitySelector(  selectCompanyState,);const companyStaff = childrenEntitiesSelector(  selectUserState,  'companyId',  'staff',);
// later.const company1 = company(  selectUserState(),);
// the same as.const company2 = rootEntity(  selectCompanyState,  childrenEntities(    selectUserState,    'companyId',    'staff',  ),);