'Retrieves the specified schema from the Data Lake Analytics catalog.
:param account_name: The Azure Data Lake Analytics account upon which
to execute catalog operations.
:type account_name: str
:param database_name: The name of the database containing the schema.
:type database_name: str
:param schema_name: The name of the schema.
:type schema_name: str
:param dict custom_headers: headers that will be added to the request
:param bool raw: returns the direct response alongside the
deserialized response
:param operation_config: :ref:`Operation configuration
overrides<msrest:optionsforoperations>`.
:rtype: :class:`USqlSchema
<azure.mgmt.datalake.analytics.catalog.models.USqlSchema>`
:rtype: :class:`ClientRawResponse<msrest.pipeline.ClientRawResponse>`
if raw=true
:raises: :class:`CloudError<msrestazure.azure_exceptions.CloudError>`'

def get_schema(self, account_name, database_name, schema_name, custom_headers=None, raw=False, **operation_config):

    url = '/catalog/usql/databases/{databaseName}/schemas/{schemaName}'
    path_format_arguments = {'accountName': self._serialize.url('account_name', account_name, 'str', skip_quote=True), 'adlaCatalogDnsSuffix': self._serialize.url('self.config.adla_catalog_dns_suffix', self.config.adla_catalog_dns_suffix, 'str', skip_quote=True), 'databaseName': self._serialize.url('database_name', database_name, 'str'), 'schemaName': self._serialize.url('schema_name', schema_name, 'str')}
    url = self._client.format_url(url, **path_format_arguments)
    query_parameters = {}
    query_parameters['api-version'] = self._serialize.query('self.api_version', self.api_version, 'str')
    header_parameters = {}
    header_parameters['Content-Type'] = 'application/json;    charset=utf-8'
    if self.config.generate_client_request_id:
        header_parameters['x-ms-client-request-id'] = str(uuid.uuid1())
    if custom_headers:
        header_parameters.update(custom_headers)
    if (self.config.accept_language is not None):
        header_parameters['accept-language'] = self._serialize.header('self.config.accept_language', self.config.accept_language, 'str')
    request = self._client.get(url, query_parameters)
    response = self._client.send(request, header_parameters, **operation_config)
    if (response.status_code not in [200]):
        exp = CloudError(response)
        exp.request_id = response.headers.get('x-ms-request-id')
        raise exp
    deserialized = None
    if (response.status_code == 200):
        deserialized = self._deserialize('USqlSchema', response)
    if raw:
        client_raw_response = ClientRawResponse(deserialized, response)
        return client_raw_response
    return deserialized
