PluginBag (Solr 8.0.0 API)

Nested Classes
Modifier and Type	Class and Description
`class`	`PluginBag.LazyPluginHolder<T>` A class that loads plugins Lazily.
`static class`	`PluginBag.PluginHolder<T>` An indirect reference to a plugin.
`static class`	`PluginBag.RuntimeLib` This represents a Runtime Jar.

Constructors
Constructor and Description
`PluginBag(Class<T> klass, SolrCore core)` Constructs a non-threadsafe plugin registry
`PluginBag(Class<T> klass, SolrCore core, boolean needThreadSafety)` Pass needThreadSafety=true if plugins can be added and removed concurrently with lookups.

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Set<String>`	`checkContains(Collection<String> names)` Check if any of the mentioned names are missing.
`void`	`close()` Close this registry.
`boolean`	`contains(String name)`
`PluginBag.PluginHolder<T>`	`createPlugin(PluginInfo info)`
`T`	`get(String name)` Get a plugin by name.
`T`	`get(String name, boolean useDefault)` Fetches a plugin by name , or the default
`ApiBag`	`getApiBag()`
`Map<String,PluginBag.PluginHolder<T>>`	`getRegistry()`
`boolean`	`isLoaded(String name)` To check if a plugin by a specified name is already loaded
`Set<String>`	`keySet()`
`T`	`put(String name, T plugin)` register a plugin by a name
`Api`	`v2lookup(String path, String method, Map<String,String> parts)`

public PluginBag(Class<T> klass,
                 SolrCore core,
                 boolean needThreadSafety)

Pass needThreadSafety=true if plugins can be added and removed concurrently with lookups.

public PluginBag(Class<T> klass,
                 SolrCore core)

Constructs a non-threadsafe plugin registry

checkContains
```
public Set<String> checkContains(Collection<String> names)
```
Check if any of the mentioned names are missing. If yes, return the Set of missing names

public PluginBag.PluginHolder<T> createPlugin(PluginInfo info)

get
```
public T get(String name)
```
Get a plugin by name. If the plugin is not already instantiated, it is done here

public T put(String name,
             T plugin)

public Map<String,PluginBag.PluginHolder<T>> getRegistry()

isLoaded
```
public boolean isLoaded(String name)
```
To check if a plugin by a specified name is already loaded

public Api v2lookup(String path,
                    String method,
                    Map<String,String> parts)

Class PluginBag<T>