No signature of method when trying to build job using groovy

[Gopi V]

I'm getting below error when I'm running below seed job

ERROR: Build step failed with exception groovy.lang.MissingMethodException: No signature of method: java.lang.Class.buildJob() is applicable for argument types: (Script1, java.lang.String, java.lang.String, java.lang.String) values: [Script1@4e13abe2, job1, Test job, ...] at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SandboxInterceptor.onMethodCall(SandboxInterceptor.java:153) at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:161) at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:165) at org.kohsuke.groovy.sandbox.impl.Checker$checkedCall$1.callStatic(Unknown Source) at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallStatic(CallSiteArray.java:56) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callStatic(AbstractCallSite.java:194) at Script1.run(Script1.groovy:30) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runScript(GroovySandbox.java:162) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SecureGroovyScript.evaluate(SecureGroovyScript.java:370) at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.SecureGroovyScript.evaluate(SecureGroovyScript.java:314)

seed job:

import java.util.logging.Logger

Logger logger = Logger.getLogger('org.example.jobdsl')

def parent = getClass().getClassLoader()
def loader = new GroovyClassLoader(parent)
File sourceFile = new File("jenkins_home/jobs/dsl_scripts/SimpleMultibranchPipelineJobSingleSource.groovy")
Class SimpleMultibranchPipelineJobSingleSource = loader.parseClass(sourceFile)
logger.info("class: ${SimpleMultibranchPipelineJobSingleSource}")
SimpleMultibranchPipelineJobSingleSource.buildJob(
    this,
    "job1",
    "Test job",
    "jenkinsfile")

SimpleMultibranchPipelineJobSingleSource.groovy file:

import javaposse.jobdsl.dsl.DslFactory

// import javaposse.jobdsl.dsl.Job

// import javaposse.jobdsl.dsl.jobs.MultibranchWorkflowJob

import java.util.logging.Logger

class SimpleMultibranchPipelineJobSingleSource {

  static buildJob(

    DslFactory dslFactory,

    String name,

    String desc,

    String jenkinsfile_path) {

    Logger logger = Logger.getLogger('org.example.jobdsl')

    logger.info(" dsl factory: ${dslFactory}")

    def source_id = UUID.randomUUID().toString()

    def git_data = [

      repo_remote: 'g...@github.com:**/**.git',

      repo_cred_id: '***',

      includes_branches: '***',

      excludes_branches: ''

    ]

    logger.info("jobs name: ${name}")

    dslFactory.multibranchPipelineJob(name) {

      description(desc)

      branchSources {

        branchSource {

          source {

            git {

              remote(git_data['repo_remote'])

              credentialsId(git_data['repo_cred_id'])

              id(source_id)

              traits {

                gitBranchDiscovery()

                headWildcardFilter {

                  includes(git_data['includes_branches'])

                  excludes(git_data['excludes_branches'])

                }

              }

            }

          }

          strategy {

            allBranchesSame {

              props {

                // Suppresses the normal SCM commit trigger coming from branch indexing.

                suppressAutomaticTriggering()

              }

            }

          }

        }

      }

      factory {

        workflowBranchProjectFactory {

          scriptPath(jenkinsfile_path)

        }

      }

      orphanedItemStrategy {

        discardOldItems {

          daysToKeep(-1)

          numToKeep(30)

        }

      }

    }

  }

}

[Gopi V]

Any help here is appreciated.