documented PipelineAnalyzer limitations

Author: rashtao

src/main/java/com/arangodb/entity/arangosearch/analyzer/PipelineAnalyzer.java

@@ -28,7 +28,10 @@
 /**
  * An Analyzer capable of chaining effects of multiple Analyzers into one. The pipeline is a list of Analyzers, where
  * the output of an Analyzer is passed to the next for further processing.
- *
+ * <p/>
+ * <b>LIMITATIONS</b>: Analyzers of types {@link GeoPointAnalyzer} and {@link GeoJSONAnalyzer} cannot be used in pipelines and
+ * will make the creation fail.
+ * <p/>
  * @author Michele Rastelli
  * @see <a href= "https://www.arangodb.com/docs/stable/arangosearch-analyzers.html#pipeline">API Documentation</a>
  * @since ArangoDB 3.8

src/main/java/com/arangodb/entity/arangosearch/analyzer/PipelineAnalyzerProperties.java

@@ -33,9 +33,12 @@ public class PipelineAnalyzerProperties {
 
     /**
      * Appends the specified analyzer to the end of the pipeline.
+     * <p/>
+     * <b>LIMITATIONS</b>: Analyzers of types {@link GeoPointAnalyzer} and {@link GeoJSONAnalyzer} cannot be used in
+     * pipelines and will make the creation fail.
+     * <p/>
      *
-     * @param analyzer
-     *         analyzer to be appended
+     * @param analyzer analyzer to be appended
      * @return this
      */
     public PipelineAnalyzerProperties addAnalyzer(final SearchAnalyzer analyzer) {