def _extract_functions(resources):
        """
        Extracts and returns function information from the given dictionary of SAM/CloudFormation resources. This
        method supports functions defined with AWS::Serverless::Function and AWS::Lambda::Function

        :param dict resources: Dictionary of SAM/CloudFormation resources
        :return dict(string : samcli.commands.local.lib.provider.Function): Dictionary of function LogicalId to the
            Function configuration object
        """

        result = {}

        for name, resource in resources.items():

            resource_type = resource.get("Type")
            resource_properties = resource.get("Properties", {})

            if resource_type == SamFunctionProvider._SERVERLESS_FUNCTION:
                layers = SamFunctionProvider._parse_layer_info(resource_properties.get("Layers", []), resources)
                result[name] = SamFunctionProvider._convert_sam_function_resource(name, resource_properties, layers)

            elif resource_type == SamFunctionProvider._LAMBDA_FUNCTION:
                layers = SamFunctionProvider._parse_layer_info(resource_properties.get("Layers", []), resources)
                result[name] = SamFunctionProvider._convert_lambda_function_resource(name, resource_properties, layers)

            # We don't care about other resource types. Just ignore them

        return result