Return the string specifying the pattern of this ignore. The string
may include the wildcard characters '*' and '?'. If you wish to
include either of these characters verbatim (i.e. you do not wish
them to expand to wildcards), you must escape them with a backslash '\'.
If you are using string literals in Java to represent the patterns, don't
forget escape characters are represented by "\\".
the pattern represented by this ignore info
Return whether or not this ignore info is enabled. A disabled ignore
info remains in the global ignore list, but no attempt is made to match
with it to determine resource ignore state.