# Functions
AuthOptions fills out a gophercloud.AuthOptions structure with the settings found on the various OpenStack OS_* environment variables.
Region provides a means of querying the OS_REGION_NAME environment variable.
# Variables
ErrNoAuthUrl errors occur when the value of the OS_AUTH_URL environment variable cannot be determined.
ErrNoPassword errors occur when the value of the OS_PASSWORD environment variable cannot be determined.
ErrNoUsername errors occur when the value of the OS_USERNAME environment variable cannot be determined.