NewBuilder returns a concrete Builder.

SampleBool is sample bool value.

SampleByte is sample byte value.

SampleFloat32 is sample float32 value.

SampleFloat64 is sample float64 value.

SampleInt is sample int value.

SampleString is sample string value.

ErrSample is sample init error value.

Builder is the interface that builds a dynamic and runtime struct.

DynamicStruct is the struct that built dynamic struct by Builder.Build().