@interface MPSCNNNeuronExponentialNode : MPSCNNNeuronNode + (id)nodeWithSource:(id)a0; + (id)nodeWithSource:(id)a0 a:(float)a1 b:(float)a2 c:(float)a3; - (id)initWithSource:(id)a0; - (id)initWithSource:(id)a0 a:(float)a1 b:(float)a2 c:(float)a3; @end