Fix missed references to removed helper functions

[nicoeg]

Hey

The previous pr #572 missed a couple of references to the removed helper functions.
The fix in ResponseCallStrategy allowed it to generate docs in my Laravel 6 project.

[codecov-io]

Codecov Report

Merging #576 into master will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master     #576   +/-   ##
=========================================
  Coverage     90.42%   90.42%           
  Complexity      299      299           
=========================================
  Files            14       14           
  Lines           710      710           
=========================================
  Hits            642      642           
  Misses           68       68

Impacted Files	Coverage Δ	Complexity Δ
.../Tools/ResponseStrategies/ResponseCallStrategy.php	87.6% <100%> (ø)	41 <0> (ø)	⬇️

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