@Library('yooture') 
import yooture.jenkins.yooture.Yooture

def yoo = new Yooture()
node {
    yoo.sendChatMessage("hello")
}

@Library('yooture') 
import yooture.jenkins.yooture.Yooture

def yoo = new Yooture()

pipeline {
  agent any
  stages {
    stage ('prepare') {
      steps {
        script {
            yoo.sendChatMessage("hello")
        }
      }
    }
  }
}

 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 925b9e05a9e0f6e9717275ad8215e9f07714f38b (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 925b9e05a9e0f6e9717275ad8215e9f07714f38b
 > git rev-list 925b9e05a9e0f6e9717275ad8215e9f07714f38b # timeout=10
[Pipeline] End of Pipeline
hudson.remoting.ProxyException: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
WorkflowScript: 1: unable to resolve class Library ,  unable to find class for annotation
 @ line 1, column 1.
   @Library('yooture') 
   ^

1 error

	at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310)
	at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:946)
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:593)
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:542)
	at org.codehaus.groovy.control.CompilationUnit$compile$1.call(Unknown Source)
	at org.jenkinsci.plugins.pipeline.modeldefinition.parser.Converter.compilationUnitToPipelineDef(Converter.groovy:136)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
	at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite$StaticMetaMethodSiteNoUnwrapNoCoerce.invoke(StaticMetaMethodSite.java:151)
	at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.callStatic(StaticMetaMethodSite.java:102)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:206)
	at org.jenkinsci.plugins.pipeline.modeldefinition.parser.Converter.scriptToPipelineDef(Converter.groovy:116)
	at org.jenkinsci.plugins.pipeline.modeldefinition.parser.Converter.parseFromCpsScript(Converter.groovy:177)
	at org.jenkinsci.plugins.pipeline.modeldefinition.parser.Converter$parseFromCpsScript.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at org.jenkinsci.plugins.pipeline.modeldefinition.parser.Converter$parseFromCpsScript.call(Unknown Source)
	at org.jenkinsci.plugins.pipeline.modeldefinition.Utils.attachExecutionModel(Utils.groovy:183)
	at org.jenkinsci.plugins.pipeline.modeldefinition.Utils$attachExecutionModel.call(Unknown Source)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
	at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.methodCall(DefaultInvoker.java:18)
	at org.jenkinsci.plugins.pipeline.modeldefinition.ModelInterpreter.call(jar:file:/home/yooture/hudson_home/plugins/pipeline-model-definition/WEB-INF/lib/pipeline-model-definition.jar!/org/jenkinsci/plugins/pipeline/modeldefinition/ModelInterpreter.groovy:52)
	at WorkflowScript.run(WorkflowScript:7)
	at ___cps.transform___(Native Method)