Concentrated issues

Here is the list of the lines that generated the most issues.

File	Count	Analysis
/includes/CMB2_Field_Display.php:381	8	Iffectations PHP Keywords As Names Buried Assignation Undefined Functions Written Only Variables Undefined Variable
/includes/CMB2_Base.php:426	7	Undefined Functions Could Make A Function Long Arguments Undefined Variable Use Class Operator Preprocessable
/includes/CMB2_Base.php:458	7	Uses Default Values PHP Keywords As Names Undefined Functions Could Make A Function Long Arguments Use Class Operator Preprocessable
/includes/CMB2_Hookup.php:565	7	Methods Without Return Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static No Boolean As Default Use Named Boolean In Argument Definition
/includes/CMB2_JS.php:147	7	Methods Without Return Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static No Boolean As Default Use Named Boolean In Argument Definition
/includes/CMB2_JS.php:163	7	Methods Without Return Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static No Boolean As Default Use Named Boolean In Argument Definition
/includes/rest-api/CMB2_REST.php:553	7	Used Once Variables (In Scope) PHP Keywords As Names Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static
/includes/rest-api/CMB2_REST_Controller.php:416	7	Used Once Variables (In Scope) Methods Without Return PHP Keywords As Names Empty Function Unused Arguments Should Use Local Class Method Could Be Static
/includes/CMB2.php:1370	6	Unused Arguments Never Used Parameter No Boolean As Default Use Named Boolean In Argument Definition Mismatched Default Arguments Mismatched Typehint
/includes/CMB2_Base.php:414	6	Methods Without Return PHP Keywords As Names Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static
/includes/CMB2_Base.php:456	6	Uses Default Values PHP Keywords As Names Undefined Functions Could Make A Function Use Class Operator Preprocessable
/includes/CMB2_Base.php:509	6	Undefined Functions Wrong Number Of Arguments Uncaught Exceptions Could Make A Function Use Class Operator Preprocessable
/includes/CMB2_Sanitize.php:294	6	Unused Arguments Never Used Parameter Non Nullable Getters No Boolean As Default Use Named Boolean In Argument Definition Mismatched Default Arguments
/includes/CMB2_Sanitize.php:327	6	Unused Arguments Never Used Parameter Non Nullable Getters No Boolean As Default Use Named Boolean In Argument Definition Mismatched Default Arguments
/includes/CMB2_Utils.php:535	6	Methods Without Return PHP Keywords As Names Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static
/includes/rest-api/CMB2_REST.php:401	6	Used Once Variables (In Scope) PHP Keywords As Names Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static
/includes/rest-api/CMB2_REST_Controller.php:300	6	Undefined Functions Undefined Classes Unresolved Classes Could Make A Function Long Arguments Use Class Operator
/includes/types/CMB2_Type_File_Base.php:141	6	Forgotten Visibility Unused Arguments Should Use Local Class Never Used Parameter Method Could Be Static Mismatched Default Arguments