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}

# Cloned from Params::Util::_CLASS
sub _CLASS ($) {
	(
		defined $_[0]
		and
		! ref $_[0]
		and
		$_[0] =~ m/^[^\W\d]\w*(?:::\w+)*$/s
	) ? $_[0] : undef;
}

1;

# Copyright 2008 - 2009 Adam Kennedy.