SmileModelData (OpenGamma Strata)

All Known Implementing Classes:

SabrFormulaData, SsviFormulaData
```
public interface SmileModelData
```
A data bundle of a volatility model.
An implementation contains the data required for a volatility model. This is used with VolatilityFunctionProvider.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`int`	`getNumberOfParameters()`	Obtains the number of model parameters.
`double`	`getParameter(int index)`	Obtains a model parameter specified by the index.
`boolean`	`isAllowed(int index, double value)`	Checks the value satisfies the constraint for a model parameter.
`SmileModelData`	`with(int index, double value)`	Creates a new smile model data bundle with a model parameter replaced.

- Method Detail
  - getNumberOfParameters
```
int getNumberOfParameters()
```
    Obtains the number of model parameters.
    
    Returns:
    
    the number of model parameters
  - getParameter
```
double getParameter(int index)
```
    Obtains a model parameter specified by the index.
    
    Parameters:
    
    index - the index
    
    Returns:
    
    the model parameter
  - isAllowed
```
boolean isAllowed(int index,
                  double value)
```
    Checks the value satisfies the constraint for a model parameter.
    The parameter is specified by index.
    
    Parameters:
    
    index - the index
    
    value - the value
    
    Returns:
    
    true if allowed, false otherwise
  - with
```
SmileModelData with(int index,
                    double value)
```
    Creates a new smile model data bundle with a model parameter replaced.
    The parameter is specified by index and replaced by value.
    
    Parameters:
    
    index - the index
    
    value - the value
    
    Returns:
    
    the new bundle