def populate(volume_info = nil)
if not volume_info and @id
response = @connection.req("GET", "/#{@volume_path}/#{@id}")
volume_info = JSON.parse(response.body)["volume"]
end
@id = volume_info["id"]
@display_name = volume_info["display_name"] || volume_info["displayName"] || volume_info["name"]
@display_description = volume_info["display_description"] || volume_info["displayDescription"]
@size = volume_info["size"]
@volume_type = volume_info["volume_type"] || volume_info["volumeType"]
@metadata = volume_info["metadata"]
@availability_zone = volume_info["availability_zone"] || volume_info["availabilityZone"]
@snapshot_id = volume_info["snapshot_id"] || volume_info["snapshotId"]
@attachments = volume_info["attachments"]
@created_at = volume_info["created_at"] || volume_info["createdAt"]
@updated_at = volume_info["updated_at"]
@status = volume_info["status"]
end