对首元素值相同的标记进行分组——基于给定嵌套列表的技术请求

Got it, here's your nested elements grouped neatly by their first element value, formatted clearly using markdown:

layer Group #

• (layer 0 (dielectric FR4) (thickness 0.005) )
• (layer 1 (dielectric copper) (thickness 0.01) )
• (layer 2 (dielectric FR4) (thickness 0.005) )

physicalLayerGroup Group #

• (physicalLayerGroup "TOP" (minLineWidth ALWAYS_CHECK) (maxLineWidth ALWAYS_CHECK) (maxBondingWireLength NEVER_CHECK) (minBondingWireLength NEVER_CHECK) )
• (physicalLayerGroup "L02" (minLineWidth ALWAYS_CHECK) (maxLineWidth ALWAYS_CHECK) (maxBondingWireLength NEVER_CHECK) (minBondingWireLength NEVER_CHECK) )
• (physicalLayerGroup "L03" (minL... )

内容的提问来源于stack exchange，提问作者code_warrior