<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def ReleaseTypeEnum(ctx):
 """Types of Releases."""

    return Enum(
        ctx,
        all=0,
        selected=3,
        sametype=4,
        notselected=5,
        inversetype=6,
        default=Pass
    )