this.index = index;
this.type = type;
this.bulkSize = bulkSize;
this.flushInterval = flushInterval;
this.username = username;
<BUG>this.password = password;
}</BUG>
public static Builder builder() {
return new Builder();
}

this.index = index;
this.type = type;
this.bulkSize = bulkSize;
this.flushInterval = flushInterval;
this.username = username;
this.password = password;
this.pipeline = pipeline;
}
public static Builder builder() {
return new Builder();
}
