public IamActionDefinition withRoles(java.util.Collection<String> roles) {
        setRoles(roles);
        return this;
    }
<p>
A list of roles to be attached. There must be at least one role.
</p>

@param roles
       A list of roles to be attached. There must be at least one role.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-budgets/src/main/java/com/amazonaws/services/budgets/model/IamActionDefinition.java