[CMake] How to retrieve the property list dynamically?

[SF Markus Elfring]

Hello,

Various properties can be queried by the command "get_property".
http://cmake.org/cmake/help/cmake-2-8-docs.html#section_Properties

I am looking for a command in the corresponding programming interface which can
return a list of property names which will be optionally filtered by a regular
expression. Is such a functionality already available?

Regards,
Markus