core/com.tealium.prism.core.api.settings/MappingParameters/MappingParameters MappingParameters constructor(reference: ReferenceContainer?, filter: StringContainer?, mapTo: ValueContainer?)Parametersreferencean optional reference to the key used by this mapping to find the valuefilteran optional filter, that the reference should be equal to in order for the mapping to be appliedmapToa constant value to map instead of the value found at the reference