EDataServer.SOURCE_CREDENTIAL_USERNAME
Description: Reference for EDataServer.SOURCE_CREDENTIAL_USERNAME

### Constant

# EDataServerSOURCE_CREDENTIAL_USERNAME

#### Declaration

    #define E_SOURCE_CREDENTIAL_USERNAME "username"

#### Description

A name of the named parameter used for usernames in credentials, used to authenticate users with `e_source_invoke_authenticate_sync()` and e_source_invoke_authenticate(). The named parameter is optional, different authentication methods can use different names.