#6137 - simplified return value for the generated XML, avoiding writing it to a variable
#6137 - simplified ternary, alignment, spacing
#6137 - swapping type checks to reduce overhead
Merge branch 'feature/#6137-formatter-xml-extra-improvement' into develop

Close #6137
Fix pattern for mobile phone number

The current pattern allows to much long mobile phone numbers, the new one fixes it.
Improve test for FR mobile phone number validator
Update FR.php
Merge branch 'hotfix/#6161-too-long-mobile-phone-numbers-fix' into develop

Close #6161
Use data provider in PhoneNumberTest.
Correction for french premium number pattern.
Merge branch 'hotfix/#6396-phone-number-tests-with-provider' into develop

Close #6396
[BUGFIX] missing Zend XML-RPC support library
Merge branch 'hotfix/#6170-zend-xml-dependency-for-zend-xmlrpc'

Close #6170
Merge branch 'hotfix/#6170-zend-xml-dependency-for-zend-xmlrpc' into develop

Forward port #6170
Enhancement: Do not overwrite requestId if extra already has one
Merge branch 'feature/#6178-do-not-overwrite-request-id' into develop

Close #6178
Fix for odd php-cs-fixer finds
Merge branch 'hotfix/#6462-fix-phpcs-reported-errors'

Close #6462
Merge branch 'hotfix/#6462-fix-phpcs-reported-errors' into develop

Forward port #6462
Enhancement: Introduce ReferenceId processor
Enhancement: Register ReferenceId processor in ProcessorPluginManager