UnitSystem (udunits 5.5.0 API)

All Known Implementing Classes:

SI, UnitSystemImpl
```
public interface UnitSystem
```
Interface for a system of units.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`BaseUnit`	`getBaseUnit(BaseQuantity quantity)`	Returns the base unit corresponding to a base quantity.
`UnitDB`	`getBaseUnitDB()`	Returns the database of base units.
`UnitDB`	`getUnitDB()`	Returns the complete database of units (base units and derived units acceptable for use in the system of units.

- Method Detail
  - getBaseUnitDB
```
UnitDB getBaseUnitDB()
```
    Returns the database of base units.
    
    Returns:
    
    The database of base units.
  - getUnitDB
```
UnitDB getUnitDB()
```
    Returns the complete database of units (base units and derived units acceptable for use in the system of units.
    
    Returns:
    
    The complete database of units.
  - getBaseUnit
```
BaseUnit getBaseUnit(BaseQuantity quantity)
```
    Returns the base unit corresponding to a base quantity.
    
    Parameters:
    
    quantity - A base quantity.
    
    Returns:
    
    The base unit corresponding to the base quantity or null if no such unit exists.