Acl: get

import com.google.api.services.calendar.Calendar;
import com.google.api.services.calendar.model.AclRule;

// ...

// Initialize Calendar service with valid OAuth credentials
Calendar service = new Calendar.Builder(httpTransport, jsonFactory, credentials)
    .setApplicationName("applicationName").build();

// Retrieve access rule
AclRule rule = service.acl().get('primary', "ruleId").execute();

System.out.println(rule.getId() + ": " + rule.getRole());

rule = service.acl().get(calendarId='primary', ruleId='ruleId').execute()

print '%s: %s' % (rule['id'], rule['role'])

$rule = $service->acl->get('primary', 'ruleId');

echo $rule->getId() . ': ' . $rule->getRole();

result = client.get_acl('primary', 'ruleId')
print result.id + ": " + result.role