public void setAssociatedAt(String associatedAt) {
        this.associatedAt = associatedAt;
    }
The time, in milliseconds since the epoch, when the role ARN was associated with the group.

@param associatedAt
       The time, in milliseconds since the epoch, when the role ARN was associated with the group.
aws-java-sdk-greengrass/src/main/java/com/amazonaws/services/greengrass/model/AssociateRoleToGroupResult.java