( object object, string class_name, string regexp [, bool exclude] )
Aggregates methods from a class to
an existing object using a regular expression to match method names.
The optional parameter
exclude is used to decide whether the regular
expression will select
the names of methods to include in the aggregation (i.e.
exclude is FALSE, which is the default value),
or to exclude from the aggregation (exclude is
The class constructor or methods
whose names start with an underscore character (_), which are
considered private to the aggregated class, are always