@Override
	public String getName() {
		return "Append Comment";
	}
Construct command
@param addr address of code unit where comment will be placed
@param commentType comment type
@param comment comment for code unit, should not be null
@param separator characters to separate the new comment from the previous comment when
concatenating.
Ghidra/Features/Base/src/main/java/ghidra/app/cmd/comments/AppendCommentCmd.java