Tiny typo fix in docblock
Merge pull request #6126
Merge pull request #6126 in master
added missing { and } after if
Merge branch 'hotfix/#6125-enforcing-braces-in-if-construct-usage'

Close #6125
Fix class description
Merge branch 'hotfix/#6128-isimage-file-validator-description'

Close #6128
change is_null($var) to (null === $var) for consistency
Merge branch 'cs/#6129-is_null-removal'

Close #6129
change docblocks and comments that still using "Zend_" to "Zend\"
fix trailing_spaces
@var fix
fix @throws docblock
Merge branch 'cs/#6130-Zend_-classnames-replacement'

Close #6130
Fix undefined classes in phpDoc
Fix undefined class constant
Fix possible undefined methods in inherited classes
#6094 - changing boolean -> bool as of @samsonasik's suggestion (see #3342)
#6094 - removing unused `null` default property value
Merge branch 'hotfix/#6094-undefined-symbols-fixes'

Close #6094