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Stream Feeds Java Client for backend and android integrations
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package io.getstream.core.models;

import static com.google.common.base.Preconditions.checkNotNull;

import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.google.common.base.MoreObjects;
import io.getstream.core.models.serialization.DateDeserializer;
import java.util.Date;
import java.util.List;
import java.util.Objects;

@JsonIgnoreProperties(ignoreUnknown = true)
public class Group {
  private final String id;
  private final String group;
  private final List activities;
  private final int actorCount;
  private final Date createdAt;
  private final Date updatedAt;

  @JsonCreator
  public Group(
      @JsonProperty("id") String id,
      @JsonProperty("group") String group,
      @JsonProperty("activities") List activities,
      @JsonProperty("actor_count") int actorCount,
      @JsonProperty("created_at") @JsonDeserialize(using = DateDeserializer.class) Date createdAt,
      @JsonProperty("updated_at") @JsonDeserialize(using = DateDeserializer.class) Date updatedAt) {
    checkNotNull(id, "Group 'id' field required");
    checkNotNull(group, "Group 'group' field required");
    checkNotNull(activities, "Group 'activities' field required");

    this.id = id;
    this.group = group;
    this.activities = activities;
    this.actorCount = actorCount;
    this.createdAt = createdAt;
    this.updatedAt = updatedAt;
  }

  public String getID() {
    return id;
  }

  public String getGroup() {
    return group;
  }

  public String getGroupID() {
    return id + '.' + group;
  }

  public List getActivities() {
    return activities;
  }

  public int getActorCount() {
    return actorCount;
  }

  public Date getCreatedAt() {
    return createdAt;
  }

  public Date getUpdatedAt() {
    return updatedAt;
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    Group that = (Group) o;
    return actorCount == that.actorCount
        && Objects.equals(id, that.id)
        && Objects.equals(group, that.group)
        && Objects.equals(activities, that.activities)
        && Objects.equals(createdAt, that.createdAt)
        && Objects.equals(updatedAt, that.updatedAt);
  }

  @Override
  public int hashCode() {
    return Objects.hash(id, group, activities, actorCount, createdAt, updatedAt);
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this)
        .add("activities", this.activities)
        .add("actorCount", this.actorCount)
        .add("createdAt", this.createdAt)
        .add("updatedAt", this.updatedAt)
        .toString();
  }
}