[REF] Do not pass form properties within the form

[eileenmcnaughton]

Overview

[REF] Do not pass form properties within the form

This function was obviously separated from shared code - so
now we can use this within the function....

Before

$this passed to protected non-static function

After

the function accesses $this itself

Technical Details

I also made it private to be even clearer that it is only used in this form

Comments

[civibot]

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[colemanw]

Makes sense.