Add comments to exported methods for root package

string_array.go

@@ -4,13 +4,16 @@ import (
 	"strings"
 )
 
+// StringArray is a type alias for a slice of strings
 type StringArray []string
 
+// Set appends a string to the StringArray
 func (a *StringArray) Set(s string) error {
 	*a = append(*a, s)
 	return nil
 }
 
+// String joins elements of the StringArray into a single comma separated string
 func (a *StringArray) String() string {
 	return strings.Join(*a, ",")
 }