Not able to create custom form field

Issue

While trying to create a custom form field using Liferay Developer Studio 3.8.1.
LDS shows an error "Specified Liferay version is invalid. Must be in range [7.0.0,7.2.0)"

Environment

Liferay DXP 7.2

Resolution

The issue will be fixed in the upcoming fix-pack where the complete and rigorous will be done. In the meantime, the below workaround can be followed:

1. Updated Blade to the snapshot:
```
D:\Workspace>blade update -s
Current blade version 3.10.0.SNAPSHOT202005212038 is greater than the latest snapshot version.
D:\Workspace>blade version
blade version 3.10.0.SNAPSHOT202005212038
```
2. Then created a folder called "workspace", stepped into it, and created a new Liferay Workspace (for DXP 7.2) in it:

D:\Workspace>blade init -f -v 7.2

3. Then created the form field module:
```
D:\Workspace>blade create -t form-field -p com.liferay.my.form.field -c MyFormField my-form-field
Successfully created project my-form-field in D:\Workspace\modules
```
4. Then stepped into the module folder and tried to build it:
```
D:\Workspace>cd modules

D:\Workspace\modules>cd my-form-field

D:\Workspace\modules\my-form-field>..\..\gradlew build


> Task :modules:my-form-field:compileJava FAILED
D:\Workspace\modules\my-form-field\src\main\java\com\liferay\my\form\field\form\field\MyFormFieldDDMFormFieldRenderer.java:30: error: missing return statement
        }
        ^
1 error
```
As you can see, this error in MyFormFieldDDMFormFieldRenderer.java because strangely, the getTemplateNamespace method lacked a return statement (it was completely empty). So, kindly add the below line MyFormFieldDDMFormFieldRenderer.java.
return "my-form-field";

so please put it in my file and tried to build it again. Now the build will be successful.

5. Now needed a DXP server where this jar file could be deployed. So took a vanilla DXP 7.2 SP1.

6. After it started up, simply copied the com.liferay.my.form.field-1.0.0.jar file to its deploy folder, and the deployment happened successfully. I saw this in the Tomcat console:
```
2020-05-26 09:19:50.545 INFO  [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:259] Processing com.liferay.my.form.field-1.0.0.jar
2020-05-26 09:19:58.295 INFO  [fileinstall-D:/Ticket/PIDI/liferay-dxp-7.2.10.1-sp1/osgi/modules][BundleStartStopLogger:39] STARTED com.liferay.my.form.field_1.0.0 [1099]
```