Set max method params count to 7

Author: solid-yuriiprykhodko

lib/analysis_options.yaml

@@ -20,8 +20,9 @@ dart_code_metrics:
   metrics:
     # NIST 500-235 item 2.5
     cyclomatic-complexity: 10
-    number-of-arguments: 4
-    number-of-parameters: 4
+    
+    # McConnell, S. (2004), Chapter 7.5: High-Quality Routines: How To Use Routine Parameters. Code Complete, Second Edition, Redmond, WA, USA: Microsoft Press. 174-180
+    number-of-parameters: 7
 #    source-lines-of-code: 50
 #    lines-of-code: 50
   rules:
@@ -203,4 +204,4 @@ linter:
     - use_string_buffers
     - use_test_throws_matchers
     - valid_regexps
-    - void_checks
+    - void_checks