Add static imports

Author: misolt

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/airflow/AirflowConnector.java

@@ -17,6 +17,7 @@
 package com.google.edwmigration.dumper.application.dumper.connector.airflow;
 
 import static com.google.common.collect.ImmutableList.toImmutableList;
+import static com.google.edwmigration.dumper.application.dumper.connector.Connector.validateDateRange;
 import static com.google.edwmigration.dumper.application.dumper.connector.airflow.AirflowDatabaseDriverClasses.jdbcPrefixForClassName;
 
 import com.google.auto.service.AutoService;
@@ -236,7 +237,7 @@ public void validate(@Nonnull ConnectorArguments arguments) {
       Preconditions.checkState(arguments.getSchema() != null, "--schema is required with --host");
     }
 
-    Connector.validateDateRange(arguments);
+    validateDateRange(arguments);
   }
 
   @Nonnull

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/cloudera/manager/ClouderaManagerConnector.java

@@ -16,6 +16,7 @@
  */
 package com.google.edwmigration.dumper.application.dumper.connector.cloudera.manager;
 
+import static com.google.edwmigration.dumper.application.dumper.connector.Connector.validateDateRange;
 import static com.google.edwmigration.dumper.application.dumper.connector.cloudera.manager.AbstractClouderaTimeSeriesTask.TimeSeriesAggregation.DAILY;
 import static com.google.edwmigration.dumper.application.dumper.task.TaskCategory.OPTIONAL;
 
@@ -137,7 +138,7 @@ public void validate(@Nonnull ConnectorArguments arguments) {
     Preconditions.checkNotNull(
         clouderaUser, "--user is required for Cloudera Manager API connector");
 
-    Connector.validateDateRange(arguments);
+    validateDateRange(arguments);
   }
 
   private void doClouderaManagerLogin(

dumper/app/src/main/java/com/google/edwmigration/dumper/application/dumper/connector/hadoop/oozie/OozieConnector.java

@@ -16,6 +16,8 @@
  */
 package com.google.edwmigration.dumper.application.dumper.connector.hadoop.oozie;
 
+import static com.google.edwmigration.dumper.application.dumper.connector.Connector.validateDateRange;
+
 import com.google.auto.service.AutoService;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Preconditions;
@@ -82,7 +84,7 @@ public String getDefaultFileName(boolean isAssessment, Clock clock) {
   public void validate(@Nonnull ConnectorArguments arguments) {
     Preconditions.checkState(arguments.isAssessment(), "--assessment flag is required");
 
-    Connector.validateDateRange(arguments);
+    validateDateRange(arguments);
   }
 
   @Override