(self, if_clause, children=None, allow_empty_frame=False, current_session=None)
:param if_clause: XPath expression to use in if clause for CreateFrame
        :type if_clause: string
        :param children: Child elements for the frame
        :type children: list
        :param allow_empty_frame: True if the frame can be empty
        :type allow_empty_frame: bool
        :param current_session: List of current session datums
        :type current_session: list of WorkflowDatumMeta
:param if_clause: XPath expression to use in if clause for CreateFrame
        :type if_clause: string
        :param children: Child elements for the frame
        :type children: list
        :param allow_empty_frame: True if the frame can be empty
        :type allow_empty_frame: bool
        :param current_session: List of current session datums
        :type current_session: list of WorkflowDatumMeta
: param if_clause : XPath expression to use in if clause for CreateFrame : type if_clause : string : param children : Child elements for the frame : type children : list : param allow_empty_frame : True if the frame can be empty : type allow_empty_frame : bool : param current_session : List of current session datums : type current_session : list of WorkflowDatumMeta
def __init__(self, if_clause, children=None, allow_empty_frame=False, current_session=None):
        """
        :param if_clause: XPath expression to use in if clause for CreateFrame
        :type if_clause: string
        :param children: Child elements for the frame
        :type children: list
        :param allow_empty_frame: True if the frame can be empty
        :type allow_empty_frame: bool
        :param current_session: List of current session datums
        :type current_session: list of WorkflowDatumMeta
        """
        self.current_session = current_session
        self.if_clause = unescape(if_clause) if if_clause else None
        self.children = []
        self.allow_empty_frame = allow_empty_frame

        if children:
            for child in children:
                self.add_child(child)
def __init__ ( self , if_clause , children = None , allow_empty_frame = False , current_session = None ) : self . current_session = current_session self . if_clause = unescape ( if_clause ) if if_clause else None self . children = [ ] self . allow_empty_frame = allow_empty_frame if children : for child in children : self . add_child ( child )