Prior to this change, the caching reference docs referred to
'root.params', whereas the actual naming should be 'root.args'. This
naming was also reflected in the "#p" syntax for specifying method args.
This change updates the documentation to refer to 'root.args' properly
and also adds "#a" syntax for specifying method arguments more
intuitively. Note that "#p" syntax remains in place as an alias for
backward compatibility.
Issue: SPR-8938
<entry>Name of any of the method parameter. If for some reason the names are not available (ex: no debug information),
the parameter names are also available under the <literal><![CDATA[p<#arg>]]></literal> where
<emphasis><![CDATA[#arg]]></emphasis> stands for the parameter index (starting from 0).</entry>
<entry><screen>iban</screen> or <screen>p0</screen></entry>
<entry>Name of any of the method argument. If for some reason the names are not available (ex: no debug information),
the argument names are also available under the <literal><![CDATA[a<#arg>]]></literal> where
<emphasis><![CDATA[#arg]]></emphasis> stands for the argument index (starting from 0).</entry>
<entry><screen>iban</screen> or <screen>a0</screen> (one can also use <screen>p0</screen> or <literal><![CDATA[p<#arg>]]></literal> notation as an alias).</entry>