question: get the retention time in minutes . concode_field_sep Class<? extends SpectrumImpl> gSpectrumClass concode_elem_sep double[] dataMassArray concode_elem_sep double[] dataIntensityArray concode_elem_sep Double retentionTimeInMinutes concode_elem_sep List<SpectrumPrecursor> precursors concode_elem_sep List<StringPairInterface> extraDataList concode_field_sep double[] listMass concode_elem_sep SpectrumImpl buildSpectrum concode_elem_sep Class<? extends SpectrumImpl> getSpectrumClass concode_elem_sep void setSpectrumClass concode_elem_sep void setRetentionTimeInMinutes concode_elem_sep List<SpectrumPrecursor> getPrecursors concode_elem_sep void addPrecursor concode_elem_sep List<StringPairInterface> getExtraDataList concode_elem_sep void setIntensities concode_elem_sep double[] listIntensities concode_elem_sep void setMass concode_elem_sep void setExtraDataList concode_elem_sep void setPrecursors concode_elem_sep void addExtraData
target: Double function ( ) { return this . retentionTimeInMinutes ; }