parameters: (column, search_key=None)
docstring: Returns the default SearchKey instance for the
        requested column. There is one instance per
        search_key (incl. virtual keys surch as
        source_title) and we try to compute it once
        only and cache it.
        If search_key is provided, it is used as the
        name of the search key class to return.
docstring_summary: Returns the default SearchKey instance for the
        requested column. There is one instance per
        search_key (incl. virtual keys surch as
        source_title) and we try to compute it once
        only and cache it.
        If search_key is provided, it is used as the
        name of the search key class to return.
docstring_tokens: Returns the default SearchKey instance for the requested column . There is one instance per search_key ( incl . virtual keys surch as source_title ) and we try to compute it once only and cache it . If search_key is provided it is used as the name of the search key class to return .
function: def getSearchKey(column, search_key=None):
      """
        Returns the default SearchKey instance for the
        requested column. There is one instance per
        search_key (incl. virtual keys surch as
        source_title) and we try to compute it once
        only and cache it.
        If search_key is provided, it is used as the
        name of the search key class to return.
      """
function_tokens: def getSearchKey ( column , search_key = None ) :