public void setDimensions(java.util.Collection<String> dimensions) {
        if (dimensions == null) {
            this.dimensions = null;
            return;
        }

        this.dimensions = new com.amazonaws.internal.SdkInternalList<String>(dimensions);
    }
<p>
A list of specific dimensions from a dimension group. If this list isn't included, then all of the dimensions in
the group were requested, or are present in the response.
</p>

@param dimensions
       A list of specific dimensions from a dimension group. If this list isn't included, then all of the
       dimensions in the group were requested, or are present in the response.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/PerformanceInsightsMetricDimensionGroup.java