I'm reading a book that says use IssueService for dealing with issues but I created a customfield and it generated a file that injects an Issue interface
getVelocityParameters(final Issue issuepublic Map<String, Object> getVelocityParameters(final Issue issue,
final CustomField field,
final FieldLayoutItem fieldLayoutItem)
I'm wondering why one or the other and which one are you supposed to use?