code: def jvm_buffer(jvm_buf):
      """
      Construct an Arrow buffer from org.apache.arrow.memory.ArrowBuf
  
      Parameters
      ----------
  
      jvm_buf: org.apache.arrow.memory.ArrowBuf
          Arrow Buffer representation on the JVM.
  
      Returns
      -------
      pyarrow.Buffer
          Python Buffer that references the JVM memory.
      """
      nanny = _JvmBufferNanny(jvm_buf)
      address = jvm_buf.memoryAddress()
      size = jvm_buf.capacity()
      return pa.foreign_buffer(address, size, base=nanny)
  
file_path: arrow/python/pyarrow/jvm.py
imports: import pyarrow
label_desc: Use image node_id 1 for calling a global function with example usage: jvm_buffer(jvm_buf) and returns: pa