/// <summary>
/// Resolve all <see cref="IMigrationExpression"/>'s from a <see cref="ExpressionBuilderBase<T>"/><br/>
/// <br/>
/// Exception <see cref="FieldAccessException"/> wil be thrown if <see cref="ExpressionBuilderBase<T>"/> is missing the <see cref="IMigrationContext"/>
/// </summary>
/// <param name="builder"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
/// <exception cref="FieldAccessException"></exception>
public static IList <IMigrationExpression> GetMigrationExpressions <T>(
this ExpressionBuilderBase <T> builder) where T : class, IMigrationExpression
{
var context = builder.GetMigrationContextFromBuilder();
return(context?.Expressions as IList <IMigrationExpression> ?? throw new FieldAccessException($" Field of type 'IMigrationContext' not found in type[{builder.GetType().Name}]"));
}
