How to use the rwslib.extras.rwscmd.odmutils.A_ODM function in rwslib

# for elem in self.metadata.iter(E_ODM.ITEM_DEF.value):
            datatype = elem.get(A_ODM.DATATYPE.value)

            codelist = None
            for el in elem.iter(E_ODM.CODELIST_REF.value):
                codelist = el.get(A_ODM.CODELIST_OID.value)

            length = 1 if not A_ODM.LENGTH in elem else int(elem.get(A_ODM.LENGTH.value))

            if A_ODM.SIGNIFICANT_DIGITS.value in elem.keys():
                sd = elem.get(A_ODM.SIGNIFICANT_DIGITS.value)
            else:
                sd = 0

            if A_ODM.DATETIME_FORMAT.value in elem.keys():
                dt_format = elem.get(A_ODM.DATETIME_FORMAT.value)
                for fmt in [('yyyy', '%Y'), ('MMM', '%b'), ('dd', '%d'), ('HH', '%H'), ('nn', '%M'), ('ss', '%S'),
                            ('-', '')]:
                    dt_format = dt_format.replace(fmt[0], fmt[1])

            if codelist is not None:
                return self.scramble_codelist(codelist)

            elif datatype == 'integer':
                return self.scramble_int(length)

            elif datatype == 'float':
                return self.scramble_float(length, sd)

            elif datatype in ['string', 'text']:
                return self.scramble_string(length)

def scramble_itemdata(self, oid, value):
        """If metadata provided, use it to scramble the value based on data type"""
        if self.metadata is not None:
            path = ".//{0}[@{1}='{2}']".format(E_ODM.ITEM_DEF.value, A_ODM.OID.value, oid)
            elem = self.metadata.find(path)
            # for elem in self.metadata.iter(E_ODM.ITEM_DEF.value):
            datatype = elem.get(A_ODM.DATATYPE.value)

            codelist = None
            for el in elem.iter(E_ODM.CODELIST_REF.value):
                codelist = el.get(A_ODM.CODELIST_OID.value)

            length = 1 if not A_ODM.LENGTH in elem else int(elem.get(A_ODM.LENGTH.value))

            if A_ODM.SIGNIFICANT_DIGITS.value in elem.keys():
                sd = elem.get(A_ODM.SIGNIFICANT_DIGITS.value)
            else:
                sd = 0

            if A_ODM.DATETIME_FORMAT.value in elem.keys():
                dt_format = elem.get(A_ODM.DATETIME_FORMAT.value)
                for fmt in [('yyyy', '%Y'), ('MMM', '%b'), ('dd', '%d'), ('HH', '%H'), ('nn', '%M'), ('ss', '%S'),
                            ('-', '')]:

def scramble_itemdata(self, oid, value):
        """If metadata provided, use it to scramble the value based on data type"""
        if self.metadata is not None:
            path = ".//{0}[@{1}='{2}']".format(E_ODM.ITEM_DEF.value, A_ODM.OID.value, oid)
            elem = self.metadata.find(path)
            # for elem in self.metadata.iter(E_ODM.ITEM_DEF.value):
            datatype = elem.get(A_ODM.DATATYPE.value)

            codelist = None
            for el in elem.iter(E_ODM.CODELIST_REF.value):
                codelist = el.get(A_ODM.CODELIST_OID.value)

            length = 1 if not A_ODM.LENGTH in elem else int(elem.get(A_ODM.LENGTH.value))

            if A_ODM.SIGNIFICANT_DIGITS.value in elem.keys():
                sd = elem.get(A_ODM.SIGNIFICANT_DIGITS.value)
            else:
                sd = 0

            if A_ODM.DATETIME_FORMAT.value in elem.keys():
                dt_format = elem.get(A_ODM.DATETIME_FORMAT.value)
                for fmt in [('yyyy', '%Y'), ('MMM', '%b'), ('dd', '%d'), ('HH', '%H'), ('nn', '%M'), ('ss', '%S'),
                            ('-', '')]:
                    dt_format = dt_format.replace(fmt[0], fmt[1])

            if codelist is not None:
                return self.scramble_codelist(codelist)

            elif datatype == 'integer':

def scramble_itemdata(self, oid, value):
        """If metadata provided, use it to scramble the value based on data type"""
        if self.metadata is not None:
            path = ".//{0}[@{1}='{2}']".format(E_ODM.ITEM_DEF.value, A_ODM.OID.value, oid)
            elem = self.metadata.find(path)
            # for elem in self.metadata.iter(E_ODM.ITEM_DEF.value):
            datatype = elem.get(A_ODM.DATATYPE.value)

            codelist = None
            for el in elem.iter(E_ODM.CODELIST_REF.value):
                codelist = el.get(A_ODM.CODELIST_OID.value)

            length = 1 if not A_ODM.LENGTH in elem else int(elem.get(A_ODM.LENGTH.value))

            if A_ODM.SIGNIFICANT_DIGITS.value in elem.keys():
                sd = elem.get(A_ODM.SIGNIFICANT_DIGITS.value)
            else:
                sd = 0

            if A_ODM.DATETIME_FORMAT.value in elem.keys():
                dt_format = elem.get(A_ODM.DATETIME_FORMAT.value)
                for fmt in [('yyyy', '%Y'), ('MMM', '%b'), ('dd', '%d'), ('HH', '%H'), ('nn', '%M'), ('ss', '%S'),
                            ('-', '')]:
                    dt_format = dt_format.replace(fmt[0], fmt[1])

            if codelist is not None:
                return self.scramble_codelist(codelist)

def scramble_itemdata(self, oid, value):
        """If metadata provided, use it to scramble the value based on data type"""
        if self.metadata is not None:
            path = ".//{0}[@{1}='{2}']".format(E_ODM.ITEM_DEF.value, A_ODM.OID.value, oid)
            elem = self.metadata.find(path)
            # for elem in self.metadata.iter(E_ODM.ITEM_DEF.value):
            datatype = elem.get(A_ODM.DATATYPE.value)

            codelist = None
            for el in elem.iter(E_ODM.CODELIST_REF.value):
                codelist = el.get(A_ODM.CODELIST_OID.value)

            length = 1 if not A_ODM.LENGTH in elem else int(elem.get(A_ODM.LENGTH.value))

            if A_ODM.SIGNIFICANT_DIGITS.value in elem.keys():
                sd = elem.get(A_ODM.SIGNIFICANT_DIGITS.value)
            else:
                sd = 0

            if A_ODM.DATETIME_FORMAT.value in elem.keys():
                dt_format = elem.get(A_ODM.DATETIME_FORMAT.value)
                for fmt in [('yyyy', '%Y'), ('MMM', '%b'), ('dd', '%d'), ('HH', '%H'), ('nn', '%M'), ('ss', '%S'),
                            ('-', '')]:
                    dt_format = dt_format.replace(fmt[0], fmt[1])

            if codelist is not None:
                return self.scramble_codelist(codelist)

            elif datatype == 'integer':
                return self.scramble_int(length)

            elif datatype == 'float':

for n in range(0, steps):
            if ctx.obj['VERBOSE']:
                click.echo('Step {}'.format(str(n + 1)))

            # Get currently enterable fields for this subject
            subject_data = get_data(ctx, study, environment, subject)

            subject_data_odm = etree.fromstring(subject_data)
            if subject_data_odm.find('.//' + E_ODM.CLINICAL_DATA.value) is None:
                if ctx.obj['VERBOSE']:
                    click.echo('No data found')
                break

            # Get the metadata version for the subject
            subject_meta_v = subject_data_odm.find('.//' + E_ODM.CLINICAL_DATA.value).get(
                A_ODM.METADATA_VERSION_OID.value)
            if subject_meta_v is None:
                if ctx.obj['VERBOSE']:
                    click.echo('Subject not found')
                break

            # If no metadata supplied, or versions don't match, retrieve metadata from RWS
            if meta_v != subject_meta_v:
                if ctx.obj['VERBOSE']:
                    click.echo('Getting metadata version {}'.format(subject_meta_v))
                ctx.obj['RWS'].send_request(StudyVersionRequest(study, subject_meta_v))
                odm_metadata = ctx.obj['RWS'].last_result.text
                meta_v = subject_meta_v

            # Generate data values to fill in empty fields
            if ctx.obj['VERBOSE']:
                click.echo('Generating data')