ApplicationEnvironmentType

All Known Implementing Classes:

ApplicationRealEnvironment
```
public interface ApplicationEnvironmentType
```
An abstraction over the application's execution environment.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.util.Optional<java.lang.String>`	`environmentVariable(java.lang.String name)`	Retrieve the value of an environment variable.
`java.nio.file.FileSystem`	`filesystem()`
`<S> java.util.Iterator<S>`	`servicesFor(java.lang.Class<S> clazz)`
`java.util.Optional<java.lang.String>`	`systemProperty(java.lang.String name)`	Retrieve the value of a system property.

- Method Detail
  - filesystem
```
java.nio.file.FileSystem filesystem()
```
    Returns:
    
    The application's filesystem
  - systemProperty
```
java.util.Optional<java.lang.String> systemProperty(java.lang.String name)
```
    Retrieve the value of a system property.
    
    Parameters:
    
    name - The property name
    
    Returns:
    
    The property value
  - environmentVariable
```
java.util.Optional<java.lang.String> environmentVariable(java.lang.String name)
```
    Retrieve the value of an environment variable.
    
    Parameters:
    
    name - The variable name
    
    Returns:
    
    The variable value
  - servicesFor
```
<S> java.util.Iterator<S> servicesFor(java.lang.Class<S> clazz)
```
    Type Parameters:
    
    S - The service type
    
    Parameters:
    
    clazz - The service class
    
    Returns:
    
    Available services of type S