src/org/ohmage/domain/campaign/Campaign.java
public void addUsers(final Map<String, Collection<Role>> usersAndRoles) {
		if(usersAndRoles == null) {
			return;
		}
		
		userRoles.putAll(usersAndRoles);
	}
/**
	 * Adds the map of usernames to their respective roles to the internal map.
	 * 
	 * @param usersAndRoles A map of usernames to a collection of their roles
	 * 						in this campaign.
	 */
Adds the map of usernames to their respective roles to the internal map.

@param usersAndRoles A map of usernames to a collection of their roles
in this campaign.
Adds the map of usernames to their respective roles to the internal map . @param usersAndRoles A map of usernames to a collection of their roles in this campaign .
public void addUsers(final Map<String, Collection<Role>> usersAndRoles) {
		if(usersAndRoles == null) {
			return;
		}
		userRoles.putAll(usersAndRoles);
	}
public void addUsers ( final Map < String , Collection < Role > > usersAndRoles ) { if ( usersAndRoles == null ) { return ; } userRoles . putAll ( usersAndRoles ) ; }
Adds the map of usernames to their respective roles to the internal map.
Adds the map of usernames to their respective roles to the internal map .