Unexpected error. Please report an issue on AndroidAnnotations, with the following content: java.lang.NullPointerException
    at com.googlecode.androidannotations.processing.rest.MethodProcessor.retrieveAcceptAnnotationValue(MethodProcessor.java:212)
    at com.googlecode.androidannotations.processing.rest.MethodProcessor.generateHttpHeadersVar(MethodProcessor.java:193)
    at com.googlecode.androidannotations.processing.rest.MethodProcessor.generateHttpEntityVar(MethodProcessor.java:161)
    at com.googlecode.androidannotations.processing.rest.PostProcessor.addHttpEntityVar(PostProcessor.java:85)
    at com.googlecode.androidannotations.processing.rest.MethodProcessor.generateRestTemplateCallBlock(MethodProcessor.java:94)
    at com.googlecode.androidannotations.processing.rest.PostProcessor.process(PostProcessor.java:80)
    at com.googlecode.androidannotations.processing.ModelProcessor.process(ModelProcessor.java:47)
    at com.googlecode.androidannotations.AndroidAnnotationProcessor.processAnnotations(AndroidAnnotationProcessor.java:480)
    at com.googlecode.androidannotations.AndroidAnnotationProcessor.processThrowing(AndroidAnnotationProcessor.java:351)
    at com.googlecode.androidannotations.AndroidAnnotationProcessor.process(AndroidAnnotationProcessor.java:324)
    at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:139)
    at org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:121)
    at org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:159)
    at org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134)
    at org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:820)
    at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:434)
    at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:365)
    at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:178)
    at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:302)
    at org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:60)
    at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:254)
    at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:173)
    at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
    at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
    at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
    at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
    at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)