[dbs-leipzig#1303] Improve style

gradoop-flink/src/main/java/org/gradoop/flink/model/api/epgm/BaseGraphCollectionOperators.java

@@ -244,8 +244,7 @@ default DataSet<Boolean> equalsByGraphElementIds(GC otherCollection) {
    * Returns a 1-element dataset containing a {@code boolean} value which
    * indicates if the graph collection is equal to the given graph collection.
    * <p>
-   * Equality is defined on the element data contained inside the collection,
-   * i.e. vertices and edges.
+   * Equality is defined on the element data contained inside the collection, i.e. vertices and edges.
    *
    * @param otherCollection graph collection to compare with
    * @return 1-element dataset containing {@code true} if the two collections
@@ -262,8 +261,7 @@ default DataSet<Boolean> equalsByGraphElementData(GC otherCollection) {
    * Returns a 1-element dataset containing a {@code boolean} value which
    * indicates if the graph collection is equal to the given graph collection.
    * <p>
-   * Equality is defined on the data contained inside the collection, i.e.
-   * graph heads, vertices and edges.
+   * Equality is defined on the data contained inside the collection, i.e. graph heads, vertices and edges.
    *
    * @param otherCollection graph collection to compare with
    * @return 1-element dataset containing {@code true} if the two collections
@@ -332,7 +330,8 @@ default GC apply(ApplicableUnaryBaseGraphToBaseGraphOperator<GC> operator) {
 
   /**
    * Transforms a graph collection into a base graph by applying a
-   * {@link BinaryBaseGraphToBaseGraphOperator} pairwise on the elements of the collection.
+   * {@link org.gradoop.flink.model.api.operators.BinaryBaseGraphToBaseGraphOperator}
+   * pairwise on the elements of the collection.
    *
    * @param operator reducible binary graph to graph operator
    * @return base graph

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/BinaryBaseGraphCollectionToBaseGraphCollectionOperator.java

@@ -30,6 +30,6 @@
  *
  * @param <GC> the type of the graph collection used as input and return value.
  */
-public interface BinaryBaseGraphCollectionToBaseGraphCollectionOperator<
-  GC extends BaseGraphCollection> extends BinaryBaseGraphCollectionToValueOperator<GC, GC> {
+public interface BinaryBaseGraphCollectionToBaseGraphCollectionOperator<GC extends BaseGraphCollection>
+  extends BinaryBaseGraphCollectionToValueOperator<GC, GC> {
 }

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/BinaryBaseGraphCollectionToValueOperator.java

@@ -23,8 +23,8 @@
  * @param <GC> graph collection type
  * @param <V>  value type
  */
-public interface BinaryBaseGraphCollectionToValueOperator<
-  GC extends BaseGraphCollection, V> extends Operator {
+public interface BinaryBaseGraphCollectionToValueOperator<GC extends BaseGraphCollection, V>
+  extends Operator {
 
   /**
    * Executes the operator.

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/BinaryBaseGraphToValueOperator.java

@@ -24,6 +24,7 @@
  * @param <V> the type of the return value
  */
 public interface BinaryBaseGraphToValueOperator<LG extends BaseGraph, V> extends Operator {
+
   /**
    * Executes the operator on the given graphs.
    *

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/UnaryBaseGraphCollectionToBaseGraphCollectionOperator.java

@@ -18,12 +18,10 @@
 import org.gradoop.flink.model.api.epgm.BaseGraphCollection;
 
 /**
- * Creates a graph collection of type {@link GC} based on one input graph collection of the
- * same type.
+ * Creates a graph collection of type {@link GC} based on one input graph collection of the same type.
  *
  * @param <GC> the type of the graph collection used as input and return value.
  */
-public interface UnaryBaseGraphCollectionToBaseGraphCollectionOperator<
-  GC extends BaseGraphCollection>
+public interface UnaryBaseGraphCollectionToBaseGraphCollectionOperator<GC extends BaseGraphCollection>
   extends UnaryBaseGraphCollectionToValueOperator<GC, GC> {
 }

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/UnaryBaseGraphCollectionToBaseGraphOperator.java

@@ -26,6 +26,5 @@
  */
 public interface UnaryBaseGraphCollectionToBaseGraphOperator<
   GC extends BaseGraphCollection,
-  LG extends BaseGraph>
-  extends UnaryBaseGraphCollectionToValueOperator<GC, LG> {
+  LG extends BaseGraph> extends UnaryBaseGraphCollectionToValueOperator<GC, LG> {
 }

gradoop-flink/src/main/java/org/gradoop/flink/model/api/operators/UnaryBaseGraphToValueOperator.java

@@ -24,6 +24,7 @@
  * @param <V> the type of the return value
  */
 public interface UnaryBaseGraphToValueOperator<G extends BaseGraph, V> extends Operator {
+
   /**
    * Executes the operator on the given graph.
    *