public void setPipelines(java.util.Collection<PipelineSummary> pipelines) {
        if (pipelines == null) {
            this.pipelines = null;
            return;
        }

        this.pipelines = new java.util.ArrayList<PipelineSummary>(pipelines);
    }
<p>
A list of all existing Data Prepper pipelines.
</p>

@param pipelines
       A list of all existing Data Prepper pipelines.
aws-java-sdk-osis/src/main/java/com/amazonaws/services/osis/model/ListPipelinesResult.java