ModelPart.secondaryTexture

Sets the secondary texture override of this part
Check the TextureType types in the list docs
If using "resource", the second parameter should indicate the path to the Minecraft texture you want to use
If using "custom", the second parameter should indicate a texture object

overload 1:
                        
models:secondaryTexture(textureType)  
 Method Property Fluent Description Representation
textureType accepts a String String 
   
Return Value a ModelPart ModelPart 
   
overload 2:
                        
models:secondaryTexture(resource, path)  
 Method Property Fluent Description Representation
resource accepts a String String 
   
path accepts a String String 
   
Return Value a ModelPart ModelPart 
   
overload 3:
                        
models:secondaryTexture(custom, texture)  
 Method Property Fluent Description Representation
custom accepts a String String 
   
texture accepts a Texture Texture 
   
Return Value a ModelPart ModelPart