CRM_*_Form_*::$_action - Don't redeclare
Created by: totten
This property is already declared in the parent class; if upstream makes any
trivial change to it (e.g. increasing visibility from protected
to
public
), then it can break.
For an example script to experiment with PHP property visibility, see: https://gist.github.com/totten/8a1efedf512add98e3e808796b0eac63
Note: This is a formulaic/untested change since I haven't used the extension. Suggested for future-proofing.