'Convert the string *value* from the TABLEDATA_ format into an
object with the correct native in-memory datatype and mask flag.
Parameters
value : str
value in TABLEDATA format
Returns
native : tuple (value, mask)
The value as a Numpy array or scalar, and *mask* is True
if the value is missing.'

def parse(self, value, config=None, pos=None):

    raise NotImplementedError(u"This    datatype    must    implement    a    'parse'    method.")
