def fix_version_from_branch()

in merge-pr.py [0:0]


def fix_version_from_branch(branch, versions):
    # Note: Assumes this is a sorted (newest->oldest) list of un-released versions
    if branch == DEV_BRANCH_NAME:
        versions = [x for x in versions if x == DEFAULT_FIX_VERSION]
        if len(versions) > 0:
            return versions[0]
        else:
            return None
    else:
        versions = [x for x in versions if x.startswith(branch)]
        if len(versions) > 0:
            return versions[-1]
        else:
            return None