Returns true if the given qualifier is a PhonesQualifier otherwise false. Phone numbers are matched verbatim, so an empty array of phone numbers is considered invalid, as is a number that is blank or padded with whitespace.
true
false
the qualifier to check
true if the given qualifier is a PhonesQualifier, otherwise false.
Returns
trueif the given qualifier is a PhonesQualifier otherwisefalse. Phone numbers are matched verbatim, so an empty array of phone numbers is considered invalid, as is a number that is blank or padded with whitespace.