public static String streamAliasFromName(String name){
  Objects.requireNonNull(name,"name");
  if (!name.startsWith(ALIAS_PREFIX))   return null;
  return name.substring(ALIAS_PREFIX.length());
}

public static String streamAliasFromName ( String name ) { Objects . requireNonNull ( name , "name" ) ; if ( ! name . startsWith ( ALIAS_PREFIX ) ) return null ; return name . substring ( ALIAS_PREFIX . length ( ) ) ; }
extract the stream alias from a name
