Dynamically select a user or group for AEM Forms-centric workflow steps

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package com.aem.impl;

import java.util.ArrayList;
import java.util.List;

import com.adobe.aem.adobesign.recipient.RecipientAuthenticationMethod;
import com.adobe.aem.adobesign.recipient.RecipientInfo;
import com.adobe.aem.adobesign.recipient.RecipientPhoneInfo;
import com.adobe.aem.adobesign.recipient.RecipientSecurityOption;
import com.adobe.aem.adobesign.recipient.RecipientSetInfo;
import com.adobe.fd.workflow.adobesign.api.RecipientInfoSpecifier;
import com.adobe.granite.workflow.WorkflowException;
import com.adobe.granite.workflow.WorkflowSession;
import com.adobe.granite.workflow.exec.WorkItem;
import com.adobe.granite.workflow.metadata.MetaDataMap;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Service;

/**
 * <code>DummyRecipientInfoSpecifier implementation. A sample code to write implementation of RecipientInfoSpecifier to choose recipients/code>...
 */
@Service

@Component(metatype = false)
public class DummyRecipientChoser implements RecipientInfoSpecifier {
    public List<RecipientSetInfo> getAdobeSignRecipients(WorkItem workItem, WorkflowSession workflowSession, MetaDataMap args) throws WorkflowException {

        List<RecipientSetInfo> recipientSetInfos = new ArrayList<RecipientSetInfo>();

                //First Recipient

                RecipientSetInfo recipientInfoSet1 = new RecipientSetInfo();
                List<RecipientInfo> recipientInfoList = new ArrayList<RecipientInfo>();
                RecipientInfo recipientInfo1 = new RecipientInfo();//Member to first recipient

                String email;

                RecipientAuthenticationMethod recipientAuthenticationMethod = RecipientAuthenticationMethod.WEB_IDENTITY;
                RecipientSecurityOption securityOptions = null;

                String phoneNumber = "123456789";
                String countryCode = "+1";
                RecipientPhoneInfo[] recipientPhoneInfo = new RecipientPhoneInfo[1];  //if multiple phone numbers, size>1
                recipientPhoneInfo[0] = new RecipientPhoneInfo(phoneNumber, countryCode);
                securityOptions = new RecipientSecurityOption(recipientAuthenticationMethod, recipientPhoneInfo , null);

                email = "example@example.com";

                recipientInfo1.setEmail(email);
                recipientInfo1.setSecurityOptions(securityOptions);

                recipientInfoList.add(recipientInfo1);  //Add member

                recipientInfoSet1.setMemberInfos(recipientInfoList);

                //Second Recipient

                RecipientSetInfo recipientInfoSet2 = new RecipientSetInfo();
                List<RecipientInfo> recipientInfoList2 = new ArrayList<RecipientInfo>();

                recipientAuthenticationMethod = RecipientAuthenticationMethod.PHONE;
                securityOptions = null;

                phoneNumber = "987654321";//"0123456789";

                countryCode = "+1";
                RecipientPhoneInfo[] recipientPhoneInfo_1 = new RecipientPhoneInfo[1];
                recipientPhoneInfo_1[0] = new RecipientPhoneInfo(phoneNumber, countryCode);
                securityOptions = new RecipientSecurityOption(recipientAuthenticationMethod, recipientPhoneInfo_1 , null);

                email = "example2@example.com";//"dummymail2@domain.com";

                RecipientInfo recipientInfo2  = new RecipientInfo();
                recipientInfo2.setEmail(email);
                recipientInfo2.setSecurityOptions(securityOptions);

                recipientInfoList2.add(recipientInfo2);  //Add member

                recipientInfoSet2.setMemberInfos(recipientInfoList2);

                //*********************************

                recipientSetInfos.add(recipientInfoSet1);
                recipientSetInfos.add(recipientInfoSet2);

        return recipientSetInfos;

    }

}