string checksum_label - new channel repository checksum label (optional)
string name - new channel name (optional)
string summary - new channel summary (optional)
string description - new channel description (optional)
string maintainer_name - new channel maintainer name (optional)
string maintainer_email - new channel email address (optional)
string maintainer_phone - new channel phone number (optional)
string gpg_key_url - new channel gpg key url (optional)
string gpg_key_id - new channel gpg key id (optional)
string gpg_key_fp - new channel gpg key fingerprint (optional)