Static Type Checking Error for MetadataService

[Akhil Jain]

I have a Custom Script Post Function, which gets executed everytime issue is created.
I want to retrieve Default Value for a field from Metadata service if project code is not provided. Below is my code

import com.atlassian.jira.ComponentManager
import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.CustomFieldManager
import com.atlassian.jira.issue.fields.CustomField
import com.atlassian.plugin.osgi.container.OsgiContainerManager

OsgiContainerManager osgiManager = ComponentManager.getInstance().getComponentInstanceOfType(OsgiContainerManager.class)
CustomFieldManager customFieldManager = ComponentManager.getInstance().getCustomFieldManager()

CustomField projectCodeField = customFieldManager.getCustomFieldObjectByName("Project Code")
Object projectCodeFieldValue = issue.getCustomFieldValue(projectCodeField)
if(projectCodeFieldValue == null) {
 def projectCodeFieldConfig = projectCodeField.getRelevantConfig(issue)
 def metaDataService=osgiManager.getServiceTracker("com.osoboo.jira.metadata.MetadataService").getService()
 def projectCodeFieldNewValue = ComponentAccessor.optionsManager.getOptions(projectCodeFieldConfig)?.find { it.toString()==metaDataService.getMetadataValue(issue.getProjectObject(), "Default Project Code")}
 issue.setCustomFieldValue(projectCodeField,projectCodeFieldNewValue)
}

 
I get error at line 15 - "Static Type Checking"

What needs to be done to fix it.
I cannot import com.osoboo.jira.metadata.MetadataService as it unable to import.

[Akhil Jain · Accepted solution]

As found in the ScriptRunner Notes, 
Shouldn't worry about Static Type Checking that much

See the below image for more clarity