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java.lang.NullPointerException: null	at eu.rssw.antlr.proparse.checks.PublicVariable.a(Unknown Source)	at org.sonar.plugins.openedge.c.lint(Unknown Source)	at org.sonar.plugins.openedge.api.checks.AbstractLintRule.execute(AbstractLintRule.java:32)	at org.sonar.plugins.openedge.sensor.OpenEdgeProparseSensor.analyse(OpenEdgeProparseSensor.java:157)	at org.sonar.batch.phases.SensorsExecutor.executeSensor(SensorsExecutor.java:58)	at org.sonar.batch.phases.SensorsExecutor.execute(SensorsExecutor.java:50)	at org.sonar.batch.phases.AbstractPhaseExecutor.execute(AbstractPhaseExecutor.java:83)	at org.sonar.batch.scan.ModuleScanContainer.doAfterStart(ModuleScanContainer.java:192)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.scan.ProjectScanContainer.scan(ProjectScanContainer.java:241)	at org.sonar.batch.scan.ProjectScanContainer.scanRecursively(ProjectScanContainer.java:236)	at org.sonar.batch.scan.ProjectScanContainer.doAfterStart(ProjectScanContainer.java:226)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.task.ScanTask.execute(ScanTask.java:47)	at org.sonar.batch.task.TaskContainer.doAfterStart(TaskContainer.java:86)	at org.sonar.core.platform.ComponentContainer.startComponents(ComponentContainer.java:142)	at org.sonar.core.platform.ComponentContainer.execute(ComponentContainer.java:127)	at org.sonar.batch.bootstrap.GlobalContainer.executeTask(GlobalContainer.java:106)	at org.sonar.batch.bootstrapper.Batch.executeTask(Batch.java:119)	at org.sonarsource.scanner.api.internal.batch.BatchIsolatedLauncher.execute(BatchIsolatedLauncher.java:62)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.sonarsource.scanner.api.internal.IsolatedLauncherProxy.invoke(IsolatedLauncherProxy.java:60)	at com.sun.proxy.$Proxy0.execute(Unknown Source)	at org.sonarsource.scanner.api.EmbeddedScanner.doExecute(EmbeddedScanner.java:240)	at org.sonarsource.scanner.api.EmbeddedScanner.runAnalysis(EmbeddedScanner.java:151)	at org.sonarsource.scanner.cli.Main.runAnalysis(Main.java:110)	at org.sonarsource.scanner.cli.Main.execute(Main.java:72)	at org.sonarsource.scanner.cli.Main.main(Main.java:60)