Returns a string representation of this <tt>CRLExtensions</tt> object
in the form of a set of entries, enclosed in braces and separated
by the ASCII characters "<tt>, </tt>" (comma and space).
<p>Overrides to <tt>toString</tt> method of <tt>Object</tt>.
@return a string representation of this CRLExtensions.
Returns a string representation of this <tt>CRLExtensions</tt> object in the form of a set of entries, enclosed in braces and separated by the ASCII characters "<tt>, </tt>" (comma and space). <p>Overrides to <tt>toString</tt> method of <tt>Object</tt>.
@return a string representation of this CRLExtensions.