GroupPairing constructor
Used by Individual Votes to make each dot react with the group overall color :
• groupPairing is the String that makes the group pairing work. You can set anything : just be sure that each dot that is supposed to compare with each other have the same String.
• valueFor is the nullable total of vote FOR.
• valueAgainst is the nullable total of vote AGAINST.
• valueAbstention is the nullable total of vote ABSTENTION (no vote).
Implementation
GroupPairing(this.groupPairing,
{this.valueFor, this.valueAgainst, this.valueAbstention});