RPC (iwf-java-sdk 2.0.0 API)

```
@Retention(RUNTIME)
@Target(METHOD)
public @interface RPC
```
This is for annotating an RPC method for an implementation of ObjectWorkflow The method must be in the form of one of RpcDefinitions An RPC implementation can call any APIs to update external systems directly. However, it can also trigger some state execution (using Communication API) to update in the background to ensure the consistency across systems.

Optional Element Summary

Optional Elements
Modifier and Type	Optional Element	Description
`PersistenceLoadingType`	`dataAttributesLoadingType`
`java.lang.String[]`	`dataAttributesPartialLoadingKeys`
`PersistenceLoadingType`	`searchAttributesLoadingType`
`java.lang.String[]`	`searchAttributesPartialLoadingKeys`
`int`	`timeoutSeconds`

- Element Detail
  - timeoutSeconds
```
int timeoutSeconds
```
    Default:
    
    0
- - dataAttributesLoadingType
```
PersistenceLoadingType dataAttributesLoadingType
```
    Default:
    
    io.iworkflow.gen.models.PersistenceLoadingType.ALL_WITHOUT_LOCKING
- - dataAttributesPartialLoadingKeys
```
java.lang.String[] dataAttributesPartialLoadingKeys
```
    Default:
    
    {}
- - searchAttributesLoadingType
```
PersistenceLoadingType searchAttributesLoadingType
```
    Default:
    
    io.iworkflow.gen.models.PersistenceLoadingType.ALL_WITHOUT_LOCKING
- - searchAttributesPartialLoadingKeys
```
java.lang.String[] searchAttributesPartialLoadingKeys
```
    Default:
    
    {}